diff --git a/lib/get_all_adv_ips b/lib/get_all_adv_ips
index 3346fd49..29ac9619 100644
--- a/lib/get_all_adv_ips
+++ b/lib/get_all_adv_ips
@@ -34,16 +34,14 @@ FOREACH host IN hosts.keys.sort;
   NEXT IF blktmp.processed_hosts.$host.defined;
 
   FOREACH iface IN hosts.$host.interfaces;
-    FOREACH realiface IN hosts.$host.keys;
-      NEXT IF realiface != iface;
-      NEXT UNLESS hosts.$host.$realiface.type.grep('^' _ argv.type _ '$').size();
+    NEXT UNLESS hosts.$host.exists(iface);
+    NEXT UNLESS hosts.$host.$iface.type.grep('^' _ argv.type _ '$').size();
 
-      peer = hosts.$host.peer;
-      blktmp.processed_hosts.$peer = 1;
-      FOREACH ip IN hosts.$host.$realiface.advertised_ip;
-        NEXT UNLESS ip;
-        out.push(ip);
-      END;
+    peer = hosts.$host.peer;
+    blktmp.processed_hosts.$peer = 1;
+    FOREACH ip IN hosts.$host.$iface.advertised_ip;
+      NEXT UNLESS ip;
+      out.push(ip);
     END;
   END;
 END;
diff --git a/lib/get_all_adv_ips_for_host b/lib/get_all_adv_ips_for_host
index 92544f4a..00fadca2 100644
--- a/lib/get_all_adv_ips_for_host
+++ b/lib/get_all_adv_ips_for_host
@@ -33,14 +33,12 @@ END;
 out = [];
 IF status.item(hosts.${argv.host}.status);
   FOREACH iface IN hosts.${argv.host}.interfaces;
-    FOREACH realiface IN hosts.${argv.host}.keys;
-      NEXT IF realiface != iface;
-      NEXT UNLESS hosts.${argv.host}.$realiface.type.grep('^' _ argv.type _ '$').size();
-
-      FOREACH ip IN hosts.${argv.host}.$realiface.advertised_ip;
-        NEXT UNLESS ip;
-        out.push(ip);
-      END;
+    NEXT UNLESS hosts.${argv.host}.exists(iface);
+    NEXT UNLESS hosts.${argv.host}.$iface.type.grep('^' _ argv.type _ '$').size();
+
+    FOREACH ip IN hosts.${argv.host}.$iface.advertised_ip;
+      NEXT UNLESS ip;
+      out.push(ip);
     END;
   END;
 END;
diff --git a/lib/get_all_hosts_ips b/lib/get_all_hosts_ips
index 2b8f06c6..31c9c90b 100644
--- a/lib/get_all_hosts_ips
+++ b/lib/get_all_hosts_ips
@@ -35,14 +35,12 @@ FOREACH host IN hosts.keys.sort;
   NEXT UNLESS ngcp.has_role(host, argv.role);
 
   FOREACH iface IN hosts.$host.interfaces;
-    FOREACH realiface IN hosts.$host.keys;
-      NEXT IF realiface != iface;
-      NEXT UNLESS hosts.$host.$realiface.type.grep('^' _ argv.type _ '$').size();
-      NEXT IF out.grep('^' _ hosts.$host.$realiface.ip _ '$').size();
-      NEXT UNLESS hosts.$host.$realiface.ip;
+    NEXT UNLESS hosts.$host.exists(iface);
+    NEXT UNLESS hosts.$host.$iface.type.grep('^' _ argv.type _ '$').size();
+    NEXT IF out.grep('^' _ hosts.$host.$iface.ip _ '$').size();
+    NEXT UNLESS hosts.$host.$iface.ip;
 
-      out.push({ name = host, ip = hosts.$host.$realiface.ip });
-    END;
+    out.push({ name = host, ip = hosts.$host.$iface.ip });
   END;
 END;
 
diff --git a/lib/get_all_ifaces_for_host b/lib/get_all_ifaces_for_host
index 599a088c..cbe599a8 100644
--- a/lib/get_all_ifaces_for_host
+++ b/lib/get_all_ifaces_for_host
@@ -30,12 +30,10 @@ END;
 out = [];
 IF status.item(hosts.${argv.host}.status);
   FOREACH iface IN hosts.${argv.host}.interfaces;
-    FOREACH realiface IN hosts.${argv.host}.keys;
-      NEXT IF realiface != iface;
-      NEXT UNLESS hosts.${argv.host}.$realiface.type.grep('^' _ argv.type _ '$').size();
+    NEXT UNLESS hosts.${argv.host}.exists(iface);
+    NEXT UNLESS hosts.${argv.host}.$iface.type.grep('^' _ argv.type _ '$').size();
 
-      out.push(realiface);
-    END;
+    out.push(iface);
   END;
 END;
 out = out.sort;
diff --git a/lib/get_all_ips b/lib/get_all_ips
index f6064951..60dd35dc 100644
--- a/lib/get_all_ips
+++ b/lib/get_all_ips
@@ -32,14 +32,12 @@ FOREACH host IN hosts.keys;
   NEXT UNLESS ngcp.has_role(host, argv.role);
 
   FOREACH iface IN hosts.$host.interfaces;
-    FOREACH realiface IN hosts.$host.keys;
-      NEXT IF realiface != iface;
-      NEXT UNLESS hosts.$host.$realiface.type.grep('^' _ argv.type _ '$').size();
-      NEXT IF out.grep('^' _ hosts.$host.$realiface.ip _ '$').size();
-      NEXT UNLESS hosts.$host.$realiface.ip;
+    NEXT UNLESS hosts.$host.exists(iface);
+    NEXT UNLESS hosts.$host.$iface.type.grep('^' _ argv.type _ '$').size();
+    NEXT IF out.grep('^' _ hosts.$host.$iface.ip _ '$').size();
+    NEXT UNLESS hosts.$host.$iface.ip;
 
-      out.push(hosts.$host.$realiface.ip);
-    END;
+    out.push(hosts.$host.$iface.ip);
   END;
 END;
 out = out.sort;
diff --git a/lib/get_all_ips_for_host b/lib/get_all_ips_for_host
index a165f132..7b59281b 100644
--- a/lib/get_all_ips_for_host
+++ b/lib/get_all_ips_for_host
@@ -33,13 +33,11 @@ END;
 out = [];
 IF status.item(hosts.${argv.host}.status);
   FOREACH iface IN hosts.${argv.host}.interfaces;
-    FOREACH realiface IN hosts.${argv.host}.keys;
-      NEXT IF realiface != iface;
-      NEXT UNLESS hosts.${argv.host}.$realiface.type.grep('^' _ argv.type _ '$').size();
-      NEXT UNLESS hosts.${argv.host}.$realiface.ip;
+    NEXT UNLESS hosts.${argv.host}.exists(iface);
+    NEXT UNLESS hosts.${argv.host}.$iface.type.grep('^' _ argv.type _ '$').size();
+    NEXT UNLESS hosts.${argv.host}.$iface.ip;
 
-      out.push(hosts.${argv.host}.$realiface.ip);
-    END;
+    out.push(hosts.${argv.host}.$iface.ip);
   END;
 END;
 out = out.sort;
diff --git a/lib/get_all_shared_ips b/lib/get_all_shared_ips
index 4345d196..c8fbe4c7 100644
--- a/lib/get_all_shared_ips
+++ b/lib/get_all_shared_ips
@@ -34,16 +34,14 @@ FOREACH host IN hosts.keys.sort;
   NEXT IF blktmp.processed_hosts.$host.defined;
 
   FOREACH iface IN hosts.$host.interfaces;
-    FOREACH realiface IN hosts.$host.keys;
-      NEXT IF realiface != iface;
-      NEXT UNLESS hosts.$host.$realiface.type.grep('^' _ argv.type _ '$').size();
+    NEXT UNLESS hosts.$host.exists(iface);
+    NEXT UNLESS hosts.$host.$iface.type.grep('^' _ argv.type _ '$').size();
 
-      peer = hosts.$host.peer;
-      blktmp.processed_hosts.$peer = 1;
-      FOREACH ip IN hosts.$host.$realiface.shared_ip;
-        NEXT UNLESS ip;
-        out.push(ip);
-      END;
+    peer = hosts.$host.peer;
+    blktmp.processed_hosts.$peer = 1;
+    FOREACH ip IN hosts.$host.$iface.shared_ip;
+      NEXT UNLESS ip;
+      out.push(ip);
     END;
   END;
 END;
diff --git a/lib/get_all_shared_ips_for_host b/lib/get_all_shared_ips_for_host
index 973a8590..3da23a11 100644
--- a/lib/get_all_shared_ips_for_host
+++ b/lib/get_all_shared_ips_for_host
@@ -33,14 +33,12 @@ END;
 out = [];
 IF status.item(hosts.${argv.host}.status);
   FOREACH iface IN hosts.${argv.host}.interfaces;
-    FOREACH realiface IN hosts.${argv.host}.keys;
-      NEXT IF realiface != iface;
-      NEXT UNLESS hosts.${argv.host}.$realiface.type.grep('^' _ argv.type _ '$').size();
-
-      FOREACH ip IN hosts.${argv.host}.$realiface.shared_ip;
-        NEXT UNLESS ip;
-        out.push(ip);
-      END;
+    NEXT UNLESS hosts.${argv.host}.exists(iface);
+    NEXT UNLESS hosts.${argv.host}.$iface.type.grep('^' _ argv.type _ '$').size();
+
+    FOREACH ip IN hosts.${argv.host}.$iface.shared_ip;
+      NEXT UNLESS ip;
+      out.push(ip);
     END;
   END;
 END;
diff --git a/lib/get_all_shared_v6ips b/lib/get_all_shared_v6ips
index 19222744..0d550d83 100644
--- a/lib/get_all_shared_v6ips
+++ b/lib/get_all_shared_v6ips
@@ -35,19 +35,17 @@ FOREACH host IN hosts.keys.sort;
   NEXT IF blktmp.processed_hosts.$host.defined;
 
   FOREACH iface IN hosts.$host.interfaces;
-    FOREACH realiface IN hosts.$host.keys;
-      NEXT IF realiface != iface;
-      NEXT UNLESS hosts.$host.$realiface.type.grep('^' _ argv.type _ '$').size();
+    NEXT UNLESS hosts.$host.exists(iface);
+    NEXT UNLESS hosts.$host.$iface.type.grep('^' _ argv.type _ '$').size();
 
-      peer = hosts.$host.peer;
-      blktmp.processed_hosts.$peer = 1;
-      FOREACH ip IN hosts.$host.$realiface.shared_v6ip;
-        IF argv.format == 'expand';
-          ip = ngcp.net_ip_expand(ip);
-        END;
-        NEXT UNLESS ip;
-        out.push(ip);
+    peer = hosts.$host.peer;
+    blktmp.processed_hosts.$peer = 1;
+    FOREACH ip IN hosts.$host.$iface.shared_v6ip;
+      IF argv.format == 'expand';
+        ip = ngcp.net_ip_expand(ip);
       END;
+      NEXT UNLESS ip;
+      out.push(ip);
     END;
   END;
 END;
diff --git a/lib/get_all_shared_v6ips_for_host b/lib/get_all_shared_v6ips_for_host
index 75303a0c..97eb3886 100644
--- a/lib/get_all_shared_v6ips_for_host
+++ b/lib/get_all_shared_v6ips_for_host
@@ -34,17 +34,15 @@ END;
 out = [];
 IF status.item(hosts.${argv.host}.status);
   FOREACH iface IN hosts.${argv.host}.interfaces;
-    FOREACH realiface IN hosts.${argv.host}.keys;
-      NEXT IF realiface != iface;
-      NEXT UNLESS hosts.${argv.host}.$realiface.type.grep('^' _ argv.type _ '$').size();
-
-      FOREACH ip IN hosts.${argv.host}.$realiface.shared_v6ip;
-        IF argv.format == 'expand';
-          ip = ngcp.net_ip_expand(ip);
-        END;
-        NEXT UNLESS ip;
-        out.push(ip);
+    NEXT UNLESS hosts.${argv.host}.exists(iface);
+    NEXT UNLESS hosts.${argv.host}.$iface.type.grep('^' _ argv.type _ '$').size();
+
+    FOREACH ip IN hosts.${argv.host}.$iface.shared_v6ip;
+      IF argv.format == 'expand';
+        ip = ngcp.net_ip_expand(ip);
       END;
+      NEXT UNLESS ip;
+      out.push(ip);
     END;
   END;
 END;
diff --git a/lib/get_all_v6ips b/lib/get_all_v6ips
index dcbe89f7..e74448b6 100644
--- a/lib/get_all_v6ips
+++ b/lib/get_all_v6ips
@@ -33,17 +33,15 @@ FOREACH host IN hosts.keys.sort;
   NEXT UNLESS ngcp.has_role(host, argv.role);
 
   FOREACH iface IN hosts.$host.interfaces;
-    FOREACH realiface IN hosts.$host.keys;
-      NEXT IF realiface != iface;
-      NEXT UNLESS hosts.$host.$realiface.type.grep('^' _ argv.type _ '$').size();
+    NEXT UNLESS hosts.$host.exists(iface);
+    NEXT UNLESS hosts.$host.$iface.type.grep('^' _ argv.type _ '$').size();
 
-      FOREACH ip IN hosts.$host.$realiface.v6ip;
-        IF argv.format == 'expand';
-          ip = ngcp.net_ip_expand(ip);
-        END;
-        NEXT UNLESS ip;
-        out.push(ip);
+    FOREACH ip IN hosts.$host.$iface.v6ip;
+      IF argv.format == 'expand';
+        ip = ngcp.net_ip_expand(ip);
       END;
+      NEXT UNLESS ip;
+      out.push(ip);
     END;
   END;
 END;
diff --git a/lib/get_all_v6ips_for_host b/lib/get_all_v6ips_for_host
index 587bbc2e..229c1508 100644
--- a/lib/get_all_v6ips_for_host
+++ b/lib/get_all_v6ips_for_host
@@ -35,17 +35,15 @@ END;
 out = [];
 IF status.item(hosts.${argv.host}.status);
   FOREACH iface IN hosts.${argv.host}.interfaces;
-    FOREACH realiface IN hosts.${argv.host}.keys;
-      NEXT IF realiface != iface;
-      NEXT UNLESS hosts.${argv.host}.$realiface.type.grep('^' _ argv.type _ '$').size();
-
-      FOREACH ip IN hosts.${argv.host}.$realiface.v6ip;
-        IF argv.format == 'expand';
-          ip = ngcp.net_ip_expand(ip);
-        END;
-        NEXT UNLESS ip;
-        out.push(ip);
+    NEXT UNLESS hosts.${argv.host}.exists(iface);
+    NEXT UNLESS hosts.${argv.host}.$iface.type.grep('^' _ argv.type _ '$').size();
+
+    FOREACH ip IN hosts.${argv.host}.$iface.v6ip;
+      IF argv.format == 'expand';
+        ip = ngcp.net_ip_expand(ip);
       END;
+      NEXT UNLESS ip;
+      out.push(ip);
     END;
   END;
 END;
diff --git a/lib/get_default_pingnodes b/lib/get_default_pingnodes
index a0474a87..f2041a5b 100644
--- a/lib/get_default_pingnodes
+++ b/lib/get_default_pingnodes
@@ -11,25 +11,20 @@ host = ngcp.get_hostname();
 out = [];
 
 FOREACH iface IN hosts.${host}.interfaces;
-  FOREACH realiface IN hosts.${host}.keys;
-    IF realiface == iface;
-      IF hosts.${host}.$realiface.gateway;
+  NEXT UNLESS hosts.${host}.exists(iface);
+  NEXT UNLESS hosts.${host}.$iface.gateway;
 
-        IF argv.gw == 'yes';
-          out.push(hosts.${host}.$realiface.gateway);
-        END;
-
-        IF argv.dns == 'yes';
-          FOREACH dns_server_ip IN hosts.${host}.${realiface}.dns_nameservers;
-            out.push(dns_server_ip);
-          END;
-        END;
+  IF argv.gw == 'yes';
+    out.push(hosts.${host}.$iface.gateway);
+  END;
 
-      END;
+  IF argv.dns == 'yes';
+    FOREACH dns_server_ip IN hosts.${host}.${iface}.dns_nameservers;
+      out.push(dns_server_ip);
     END;
   END;
 END;
 
 out = out.sort;
 
--%]
\ No newline at end of file
+-%]
diff --git a/lib/get_iface b/lib/get_iface
index 019f515a..c9d2fb35 100644
--- a/lib/get_iface
+++ b/lib/get_iface
@@ -14,13 +14,11 @@ END;
 
 out = '';
 FOREACH iface IN hosts.${argv.host}.interfaces;
-  FOREACH realiface IN hosts.${argv.host}.keys;
-    NEXT IF realiface != iface;
-    NEXT UNLESS hosts.${argv.host}.$realiface.type.grep('^' _ argv.type _ '$').size();
+  NEXT UNLESS hosts.${argv.host}.exists(iface);
+  NEXT UNLESS hosts.${argv.host}.$iface.type.grep('^' _ argv.type _ '$').size();
 
-    out = realiface;
-    RETURN;
-  END;
+  out = iface;
+  RETURN;
 END;
 
 -%]
diff --git a/lib/get_network_for_host b/lib/get_network_for_host
index 249fb042..5524fcfa 100644
--- a/lib/get_network_for_host
+++ b/lib/get_network_for_host
@@ -14,24 +14,20 @@ END;
 
 out = '';
 FOREACH iface IN hosts.${argv.host}.interfaces;
-  FOREACH realiface IN hosts.${argv.host}.keys;
-    NEXT IF realiface != iface;
-    NEXT UNLESS hosts.${argv.host}.$realiface.type.grep('^' _ argv.type _ '$').size();
+  NEXT UNLESS hosts.${argv.host}.exists(iface);
+  NEXT UNLESS hosts.${argv.host}.$iface.type.grep('^' _ argv.type _ '$').size();
 
-    IF hosts.${argv.host}.$realiface.ip AND
-       hosts.${argv.host}.$realiface.netmask;
--%]
-[%    PERL -%]
+  IF hosts.${argv.host}.$iface.ip AND
+     hosts.${argv.host}.$iface.netmask;
+    PERL -%]
         use Net::Netmask;
 
-        my $network = Net::Netmask->new("[% hosts.${argv.host}.${realiface}.ip %]/[% hosts.${argv.host}.${realiface}.netmask %]");
+        my $network = Net::Netmask->new("[% hosts.${argv.host}.${iface}.ip %]/[% hosts.${argv.host}.${iface}.netmask %]");
         $stash->set(out => $network->desc);
-[%    END -%]
-[%
-    END;
-
-    RETURN;
+[%  END;
   END;
+
+  RETURN;
 END;
 
 -%]