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| author |  Mohammad Yosefpor <47300215+m-yosefpor@users.noreply.github.com>
| 2021-03-18 13:24:57 +0330 |
|---|---|---|
| committer |  GitHub <noreply@github.com>
| 2021-03-18 10:54:57 +0100 |
| commit | deb09c8905dbb00b47dbe873a296897558506f7c (patch) | |
| tree | b631e74ad7ca7eac1d28ed40df90f9ba6fa1c96a | |
| parent | 1b2f0bef6f3716d798d8e8cfcaa8bc55a103b2aa (diff) | |
| download | coredns-deb09c8905dbb00b47dbe873a296897558506f7c.tar.gz coredns-deb09c8905dbb00b47dbe873a296897558506f7c.tar.zst coredns-deb09c8905dbb00b47dbe873a296897558506f7c.zip | |
plugin/bind: Discard link-local addresses on binding by interface name (#4531)
* Discard link-local addresses on binding
Signed-off-by: Mohammad Yosefpor <myusefpur@gmail.com>
* Update plugin/bind: README.md
Signed-off-by: Mohammad Yosefpor <myusefpur@gmail.com>
* Except for IPv6 link-local only
Signed-off-by: Mohammad Yosefpor <myusefpur@gmail.com>
| -rw-r--r-- | plugin/bind/README.md | 2 | ||||
| -rw-r--r-- | plugin/bind/setup.go | 4 |
2 files changed, 4 insertions, 2 deletions
diff --git a/plugin/bind/README.md b/plugin/bind/README.md index 6ff3fb888..e3274d3d5 100644 --- a/plugin/bind/README.md +++ b/plugin/bind/README.md @@ -13,7 +13,7 @@ If several addresses are provided, a listener will be open on each of the IP pro Each address has to be an IP or name of one of the interfaces of the host. Bind by interface name, binds to the IPs on that interface at the time of startup or reload (reload will happen with a SIGHUP or if the config file changes). -If the given argument is an interface name, and that interface has serveral IP addresses, CoreDNS will listen on all of the interface IP addresses (including IPv4 and IPv6). +If the given argument is an interface name, and that interface has serveral IP addresses, CoreDNS will listen on all of the interface IP addresses (including IPv4 and IPv6), except for IPv6 link-local addresses on that interface. ## Syntax diff --git a/plugin/bind/setup.go b/plugin/bind/setup.go index afca06097..b2a37551c 100644 --- a/plugin/bind/setup.go +++ b/plugin/bind/setup.go @@ -37,7 +37,9 @@ func setup(c *caddy.Controller) error { } for _, addr := range addrs { if ipnet, ok := addr.(*net.IPNet); ok { - all = append(all, ipnet.IP.String()) + if ipnet.IP.To4() != nil || (!ipnet.IP.IsLinkLocalMulticast() && !ipnet.IP.IsLinkLocalUnicast()) { + all = append(all, ipnet.IP.String()) + } } } } |