diff -Nru autofs-5.1.2/debian/changelog autofs-5.1.2/debian/changelog
--- autofs-5.1.2/debian/changelog	2017-02-16 19:27:17.000000000 +0000
+++ autofs-5.1.2/debian/changelog	2018-01-24 16:01:38.000000000 +0000
@@ -1,3 +1,12 @@
+autofs (5.1.2-1ubuntu2) bionic; urgency=medium
+
+  * Fix IPv6 support by linking with libtirpc (LP: #1101779, Closes: #737679):
+    - d/control: add libtirpc-dev to build-depends
+    - d/rules: add --with-libtirpc to configure call
+    Thanks to Stefan Potyra <sistpoty@ubuntu.com>.
+
+ -- Andreas Hasenack <andreas@canonical.com>  Wed, 24 Jan 2018 14:01:38 -0200
+
 autofs (5.1.2-1ubuntu1) zesty; urgency=medium
 
   * Merge from Debian. Remaining changes:
diff -Nru autofs-5.1.2/debian/control autofs-5.1.2/debian/control
--- autofs-5.1.2/debian/control	2017-02-16 19:27:17.000000000 +0000
+++ autofs-5.1.2/debian/control	2018-01-24 16:01:38.000000000 +0000
@@ -15,7 +15,8 @@
  libsasl2-dev,
  libssl-dev,
  libxml2-dev,
- sssd-common
+ sssd-common,
+ libtirpc-dev
 Homepage: http://www.kernel.org/pub/linux/daemons/autofs/v5/
 VCS-Browser: https://anonscm.debian.org/cgit/collab-maint/autofs.git
 VCS-Git: https://anonscm.debian.org/git/collab-maint/autofs.git
diff -Nru autofs-5.1.2/debian/rules autofs-5.1.2/debian/rules
--- autofs-5.1.2/debian/rules	2017-02-16 19:27:17.000000000 +0000
+++ autofs-5.1.2/debian/rules	2018-01-24 16:01:38.000000000 +0000
@@ -34,7 +34,8 @@
 		--with-fifodir=/var/run --with-flagdir=/var/run \
 		--with-hesiod \
 		--with-openldap \
-		--with-sasl
+		--with-sasl \
+		--with-libtirpc
 # Always define HAVE_SLOPPY_MOUNT (mount -s).  Also a hack and
 # the same comment as above applies: upstream should use it unconditionally.
 # Even busybox mount understands -s.