1 files changed, 62 insertions, 0 deletions
diff --git a/debian/patches/networkd-fix-link_up-12505.patch b/debian/patches/networkd-fix-link_up-12505.patch
new file mode 100644
index 0000000..a801d61
--- /dev/null
+++ b/debian/patches/networkd-fix-link_up-12505.patch
@@ -0,0 +1,62 @@
+From: Susant Sahani <ssahani@gmail.com>
+Date: Thu, 9 May 2019 07:35:35 +0530
+Subject: networkd: fix link_up() (#12505)
+
+Fillup IFLA_INET6_ADDR_GEN_MODE while we do link_up.
+
+Fixes the following error:
+```
+dummy-test: Could not bring up interface: Invalid argument
+```
+
+After reading the kernel code when we do a link up
+```
+net/core/rtnetlink.c
+IFLA_AF_SPEC
+ af_ops->set_link_af(dev, af);
+  inet6_set_link_af
+   if (tb[IFLA_INET6_ADDR_GEN_MODE])
+             Here it looks for IFLA_INET6_ADDR_GEN_MODE
+```
+Since link up we didn't filling up that it's failing.
+
+Closes #12504.
+
+(cherry picked from commit 4eb086a38712ea98faf41e075b84555b11b54362)
+---
+ src/network/networkd-link.c | 15 +++++++++++++++
+ 1 file changed, 15 insertions(+)
+
+diff --git a/src/network/networkd-link.c b/src/network/networkd-link.c
+index 3cfdf4a..6445b94 100644
+--- a/src/network/networkd-link.c
++++ b/src/network/networkd-link.c
+@@ -1918,6 +1918,8 @@ static int link_up(Link *link) {
+         }
+ 
+         if (link_ipv6_enabled(link)) {
++                uint8_t ipv6ll_mode;
++
+                 r = sd_netlink_message_open_container(req, IFLA_AF_SPEC);
+                 if (r < 0)
+                         return log_link_error_errno(link, r, "Could not open IFLA_AF_SPEC container: %m");
+@@ -1933,6 +1935,19 @@ static int link_up(Link *link) {
+                                 return log_link_error_errno(link, r, "Could not append IFLA_INET6_TOKEN: %m");
+                 }
+ 
++                if (!link_ipv6ll_enabled(link))
++                        ipv6ll_mode = IN6_ADDR_GEN_MODE_NONE;
++                else if (sysctl_read_ip_property(AF_INET6, link->ifname, "stable_secret", NULL) < 0)
++                        /* The file may not exist. And event if it exists, when stable_secret is unset,
++                         * reading the file fails with EIO. */
++                        ipv6ll_mode = IN6_ADDR_GEN_MODE_EUI64;
++                else
++                        ipv6ll_mode = IN6_ADDR_GEN_MODE_STABLE_PRIVACY;
++
++                r = sd_netlink_message_append_u8(req, IFLA_INET6_ADDR_GEN_MODE, ipv6ll_mode);
++                if (r < 0)
++                        return log_link_error_errno(link, r, "Could not append IFLA_INET6_ADDR_GEN_MODE: %m");
++
+                 r = sd_netlink_message_close_container(req);
+                 if (r < 0)
+                         return log_link_error_errno(link, r, "Could not close AF_INET6 container: %m");