diff --git a/go/pkg/pass1/copy-raw.go b/go/pkg/pass1/copy-raw.go
index cc6e85e7..3cbb5571 100644
--- a/go/pkg/pass1/copy-raw.go
+++ b/go/pkg/pass1/copy-raw.go
@@ -4,7 +4,6 @@ import (
 	"os"
 	"os/exec"
 	"path/filepath"
-	"strings"
 
 	"github.com/hknutzen/Netspoc/go/pkg/fileop"
 	"github.com/hknutzen/Netspoc/go/pkg/filetree"
@@ -12,13 +11,14 @@ import (
 
 // Copy raw configuration files of devices into outDir for devices
 // known from topology.
-func (c *spoc) copyRaw1(rawDir, outDir, ignoreDir string) {
-	ipV6 := strings.HasSuffix(outDir, "/ipv6")
+func (c *spoc) copyRaw(inPath, outDir string) {
+	rawDir := filepath.Join(inPath, "raw")
+	if !fileop.IsDir(rawDir) {
+		return
+	}
 	deviceNames := make(map[string]bool)
 	for _, r := range c.managedRouters {
-		if r.ipV6 == ipV6 {
-			deviceNames[r.deviceName] = true
-		}
+		deviceNames[r.deviceName] = true
 	}
 
 	// outDir has already been checked / created in printCode.
@@ -28,7 +28,7 @@ func (c *spoc) copyRaw1(rawDir, outDir, ignoreDir string) {
 	}
 	for _, file := range files {
 		base := file.Name()
-		if base[0] == '.' || base == filetree.Ignore || base == ignoreDir {
+		if base[0] == '.' || base == filetree.Ignore {
 			continue
 		}
 		rawPath := filepath.Join(rawDir, base)
@@ -48,24 +48,3 @@ func (c *spoc) copyRaw1(rawDir, outDir, ignoreDir string) {
 		}
 	}
 }
-
-func (c *spoc) copyRaw(inPath, outDir string) {
-	rawDir := filepath.Join(inPath, "raw")
-	if !fileop.IsDir(rawDir) {
-		return
-	}
-	outV6 := filepath.Join(outDir, "ipv6")
-	if c.conf.IPV6 {
-		c.copyRaw1(rawDir, outV6, "ipv4")
-		subDir := filepath.Join(rawDir, "ipv4")
-		if fileop.IsDir(subDir) {
-			c.copyRaw1(subDir, outDir, "")
-		}
-	} else {
-		c.copyRaw1(rawDir, outDir, "ipv6")
-		subDir := filepath.Join(rawDir, "ipv6")
-		if fileop.IsDir(subDir) {
-			c.copyRaw1(subDir, outV6, "")
-		}
-	}
-}
diff --git a/go/testdata/ipv6.t b/go/testdata/ipv6.t
index 41994567..4ef9c057 100644
--- a/go/testdata/ipv6.t
+++ b/go/testdata/ipv6.t
@@ -491,27 +491,3 @@ router:r1 = {
 Error: Can't mkdir out/ipv6: file exists
 Aborted
 =OPTIONS=--ipv6
-
-############################################################
-=TITLE=Can't copy raw file
-=SETUP=
-mkdir -p out/.prev
-mkdir -p out/ipv6/r1.raw/r1
-=PARAMS=--ipv6
-=INPUT=
---topo
-network:n1 = { ip = ::a01:100/120; }
-router:r1 = {
-  model = IOS;
-  managed;
-  interface:n1 = { ip = ::a01:101; hardware = n1; }
-}
---raw/r1
-ipv6 route ::a01:200/120 ::a01:101
-=WITH_OUTDIR=
-=ERROR=
-Error: Can't cp raw/r1 to out/ipv6/r1.raw: exit status 1
-cp: cannot overwrite directory 'out/ipv6/r1.raw/r1' with non-directory
-
-Aborted
-=END=
diff --git a/go/testdata/ipv6/convert.pl b/go/testdata/ipv6/convert.pl
index 770af8b8..338bcbd2 100644
--- a/go/testdata/ipv6/convert.pl
+++ b/go/testdata/ipv6/convert.pl
@@ -245,7 +245,7 @@ sub adjust_testfile {
 
         # Change path of to be checked output files.
         # IPv6 files are generated in ipv6/ subdirectory.
-        if ($line !~ m(topology|config|file|raw/| raw$|private) and
+        if ($line !~ m(topology|config|file|raw/|[.]raw$| raw$|private) and
             $filename !~ /export.t/)
         {
             $line =~ s/^(-+[ ]*)([^\s>-]+)([ ]*)$/${1}ipv6\/$2$3/;
diff --git a/go/testdata/ipv6/nat_ipv6.t b/go/testdata/ipv6/nat_ipv6.t
index 701d9c4f..46f3de73 100644
--- a/go/testdata/ipv6/nat_ipv6.t
+++ b/go/testdata/ipv6/nat_ipv6.t
@@ -720,6 +720,69 @@ Warning: Ignoring useless nat:h bound at interface:r2.n3
 Warning: Ignoring useless nat:h bound at interface:r3.n3
 =END=
 
+############################################################
+=TITLE=Bound to same interfaces
+=PARAMS=--ipv6
+=INPUT=
+network:n1 = { ip = ::a01:100/120; nat:n1 = { ip = ::a09:100/120; } }
+network:n2 = { ip = ::a01:200/120; nat:n2 = { ip = ::a09:200/120; } }
+network:n3 = { ip = ::a01:300/120; nat:n3 = { ip = ::a09:300/125; dynamic; }}
+network:n4 = { ip = ::a01:400/120; }
+network:n5 = { ip = ::a01:500/120; }
+router:r1 = {
+ interface:n1;
+ interface:n2;
+ interface:n3;
+ interface:n4 = { bind_nat = n1, n2, n3; }
+ interface:n5 = { bind_nat = n1, n2, n3; }
+}
+=WARNING=
+Warning: nat:n1 and nat:n2 are bound to same interfaces
+ and should be merged into a single definition
+Warning: nat:n1 and nat:n3 are bound to same interfaces
+ and should be merged into a single definition
+Warning: nat:n2 and nat:n3 are bound to same interfaces
+ and should be merged into a single definition
+=END=
+
+############################################################
+=TITLE=Bound to same and different interfaces
+=PARAMS=--ipv6
+=INPUT=
+network:n1 = { ip = ::a01:100/120; nat:n1 = { ip = ::a09:100/120; } }
+network:n2 = { ip = ::a01:200/120; nat:n2 = { ip = ::a09:200/120; } }
+network:n3 = { ip = ::a01:300/120; nat:n3 = { ip = ::a09:300/125; dynamic; }}
+network:n4 = { ip = ::a01:400/120; }
+network:n5 = { ip = ::a01:500/120; }
+network:n6 = { ip = ::a01:600/120; }
+router:r1 = {
+ interface:n1;
+ interface:n2;
+ interface:n3;
+ interface:n4 = { bind_nat = n1, n2; }
+ interface:n5 = { bind_nat = n2, n3; }
+ interface:n6 = { bind_nat = n1, n3; }
+}
+=WARNING=NONE
+
+############################################################
+=TITLE=Bound to same interfaces, but one is hidden
+=PARAMS=--ipv6
+=INPUT=
+network:n1 = { ip = ::a01:100/120; nat:n1 = { hidden; } }
+network:n2 = { ip = ::a01:200/120; nat:n2 = { ip = ::a09:200/120; } }
+network:n3 = { ip = ::a01:300/120; nat:n3 = { ip = ::a09:300/125; dynamic; }}
+network:n4 = { ip = ::a01:400/120; }
+network:n5 = { ip = ::a01:500/120; }
+router:r1 = {
+ interface:n1;
+ interface:n2;
+ interface:n3;
+ interface:n4 = { bind_nat = n1, n2; }
+ interface:n5 = { bind_nat = n1, n3; }
+}
+=WARNING=NONE
+
 ############################################################
 =TITLE=Non matching static NAT mask
 =PARAMS=--ipv6
diff --git a/go/testdata/ipv6/raw_ipv6.t b/go/testdata/ipv6/raw_ipv6.t
index ad3c9306..3413de04 100644
--- a/go/testdata/ipv6/raw_ipv6.t
+++ b/go/testdata/ipv6/raw_ipv6.t
@@ -33,7 +33,7 @@ ipv6 route ::a01:200/120 ::a01:101
 Warning: Ignoring path raw/aaa
 Warning: Found unused file raw/r0
 =OUTPUT=
---ipv6/r1.raw
+--r1.raw
 ! manual route
 ipv6 route ::a01:200/120 ::a01:101
 =END=
diff --git a/go/testdata/ipv6/reuse-previous_ipv6.t b/go/testdata/ipv6/reuse-previous_ipv6.t
index 740e863f..6e8898f2 100644
--- a/go/testdata/ipv6/reuse-previous_ipv6.t
+++ b/go/testdata/ipv6/reuse-previous_ipv6.t
@@ -137,7 +137,6 @@ cat <<END > old/r1.info
 {"generated_by":"devel","model":"ASA","name_list":["r1"]}
 END
 cat <<END > old/r1.config
-
 END
 cat <<END > old/r1.rules
 {"model":"ASA","acls":null,"do_objectgroup":true}
diff --git a/go/testdata/mixed-ipv4-ipv6.t b/go/testdata/mixed-ipv4-ipv6.t
index 03a02db6..9f50c213 100644
--- a/go/testdata/mixed-ipv4-ipv6.t
+++ b/go/testdata/mixed-ipv4-ipv6.t
@@ -247,82 +247,6 @@ Error: topology seems to be empty
 Aborted
 =OPTIONS=--ipv6
 
-############################################################
-=TITLE=Raw files for IPv4 and IPv6
-=TEMPL=input
--- ipv4
-network:n1 = { ip = 10.1.1.0/24; }
-router:r1 = {
- managed;
- model = ASA;
- interface:n1 = { ip = 10.1.1.1; hardware = n1; }
-}
--- {{.v4}}
-access-list n1_in extended permit icmp any4 any4
-access-group n1_in in interface n1
--- ipv6/topo
-network:n3 = { ip = 1000::abcd:0001:0/112;}
-router:r1 = {
- managed;
- model = ASA;
- interface:n3 = {ip = 1000::abcd:0001:0001; hardware = n1;}
-}
--- {{.v6}}
-access-list n1_in extended permit icmp6 any6 any6
-access-group n1_in in interface n1
-=INPUT=[[input {v4: raw/r1, v6: raw/ipv6/r1}]]
-=TEMPL=output
---r1
-! n1_in
-access-list n1_in extended deny ip any4 any4
-access-group n1_in in interface n1
---r1.raw
-access-list n1_in extended permit icmp any4 any4
-access-group n1_in in interface n1
---ipv6/r1
-! n1_in
-access-list n1_in extended deny ip any6 any6
-access-group n1_in in interface n1
---ipv6/r1.raw
-access-list n1_in extended permit icmp6 any6 any6
-access-group n1_in in interface n1
-=OUTPUT=
-[[output]]
-=END=
-
-############################################################
-=TITLE=Raw files for IPv6 and IPv4
-=INPUT=[[input {v4: raw/ipv4/r1, v6: raw/r1}]]
-=OPTIONS=--ipv6
-=OUTPUT=
-[[output]]
-=END=
-
-############################################################
-=TITLE=Invalid file and directory in raw/ipv6
-=INPUT=
--- ipv4
-network:n1 = { ip = 10.1.1.0/24; }
-router:r1 = {
- managed;
- model = ASA;
- interface:n1 = { ip = 10.1.1.1; hardware = n1; }
-}
--- raw/ipv6/r1
-access-list n1_in extended permit icmp6 any6 any6
-access-group n1_in in interface n1
--- raw/ipv6/ipv6/foo
-foo
-=WARNING=
-Warning: Ignoring path raw/ipv6/ipv6
-Warning: Found unused file raw/ipv6/r1
-=OUTPUT=
---r1
-! n1_in
-access-list n1_in extended deny ip any4 any4
-access-group n1_in in interface n1
-=END=
-
 ############################################################
 =TITLE=Verbose output with progress messages
 =TEMPL=input