From bdad16b0eeaefd4313e92ee6f6978e4285bfaf8d Mon Sep 17 00:00:00 2001 From: Arko Dasgupta Date: Fri, 10 Jan 2020 18:53:59 -0800 Subject: [PATCH] Handle error case when fixed-cidr-ipv6 is empty When IPv6 is enabled, make sure fixed-cidr-ipv6 is set by the user since there is no default IPv6 local subnet in the IPAM Signed-off-by: Arko Dasgupta --- daemon/daemon_unix.go | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/daemon/daemon_unix.go b/daemon/daemon_unix.go index 37bac78603..7f8dadb2db 100644 --- a/daemon/daemon_unix.go +++ b/daemon/daemon_unix.go @@ -1018,7 +1018,9 @@ func initBridgeDriver(controller libnetwork.NetworkController, config *config.Co ipamV6Conf *libnetwork.IpamConf ) - if config.BridgeConfig.FixedCIDRv6 != "" { + if config.BridgeConfig.EnableIPv6 && config.BridgeConfig.FixedCIDRv6 == "" { + return errdefs.InvalidParameter(errors.New("IPv6 is enabled for the default bridge, but no subnet is configured. Specify an IPv6 subnet using --fixed-cidr-v6")) + } else if config.BridgeConfig.FixedCIDRv6 != "" { _, fCIDRv6, err := net.ParseCIDR(config.BridgeConfig.FixedCIDRv6) if err != nil { return err