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authorDaniel J Walsh <dwalsh@redhat.com>2021-11-20 09:00:22 -0500
committerDaniel J Walsh <dwalsh@redhat.com>2021-12-21 08:50:40 -0500
commit64ce6949f23b308a432e83ec46c99ba67777ee1e (patch)
tree1da10ace481348ace677fbf0d815bc1967d7f05e /libpod/container_internal_linux.go
parentf3d6672c7d95e09b312ac8db43e54618d4dd1662 (diff)
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Use hosts public ip address in rootless containers
Add first non localhost ipv4 of all host interfaces as destination for host.contaners.internal for rootless containers. Fixes: https://github.com/containers/podman/issues/12000 Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
Diffstat (limited to 'libpod/container_internal_linux.go')
-rw-r--r--libpod/container_internal_linux.go23
1 files changed, 18 insertions, 5 deletions
diff --git a/libpod/container_internal_linux.go b/libpod/container_internal_linux.go
index 9e6ae9f02..c2ec02e57 100644
--- a/libpod/container_internal_linux.go
+++ b/libpod/container_internal_linux.go
@@ -2154,11 +2154,24 @@ func (c *Container) getHosts() string {
}
}
} else if c.config.NetMode.IsSlirp4netns() {
- gatewayIP, err := GetSlirp4netnsGateway(c.slirp4netnsSubnet)
- if err != nil {
- logrus.Warn("Failed to determine gatewayIP: ", err.Error())
- } else {
- hosts += fmt.Sprintf("%s host.containers.internal\n", gatewayIP.String())
+ // getLocalIP returns the non loopback local IP of the host
+ getLocalIP := func() string {
+ addrs, err := net.InterfaceAddrs()
+ if err != nil {
+ return ""
+ }
+ for _, address := range addrs {
+ // check the address type and if it is not a loopback the display it
+ if ipnet, ok := address.(*net.IPNet); ok && !ipnet.IP.IsLoopback() {
+ if ipnet.IP.To4() != nil {
+ return ipnet.IP.String()
+ }
+ }
+ }
+ return ""
+ }
+ if ip := getLocalIP(); ip != "" {
+ hosts += fmt.Sprintf("%s\t%s\n", ip, "host.containers.internal")
}
} else {
logrus.Debug("Network configuration does not support host.containers.internal address")