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Use RTA_PREFSRC instead of RTA_SRC to make AddRoute() works with a provided source ip address. 

Docker-DCO-1.1-Signed-off-by: Albert Zhang <zhgwenming@gmail.com> (github: zhgwenming)
This commit is contained in:
Albert Zhang 2014-11-01 19:47:09 +08:00
parent d3eb885553
commit 7caee2a772
1 changed files with 3 additions and 8 deletions
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11
netlink/netlink_linux.go
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@ -1002,28 +1002,23 @@ func AddRoute(destination, source, gateway, device string) error {
}
if source != "" {
srcIP, srcNet, err := net.ParseCIDR(source)
srcIP := net.ParseIP(source)
if err != nil {
return fmt.Errorf("source CIDR %s couldn't be parsed", source)
return fmt.Errorf("source IP %s couldn't be parsed", source)
}
srcFamily := getIpFamily(srcIP)
if currentFamily != -1 && currentFamily != srcFamily {
return fmt.Errorf("source and destination ip were not the same IP family")
}
currentFamily = srcFamily
srcLen, bits := srcNet.Mask.Size()
if srcLen == 0 && bits == 0 {
return fmt.Errorf("source CIDR %s generated a non-canonical Mask", source)
}
msg.Family = uint8(srcFamily)
msg.Src_len = uint8(srcLen)
var srcData []byte
if srcFamily == syscall.AF_INET {
srcData = srcIP.To4()
} else {
srcData = srcIP.To16()
}
rtAttrs = append(rtAttrs, newRtAttr(syscall.RTA_SRC, srcData))
rtAttrs = append(rtAttrs, newRtAttr(syscall.RTA_PREFSRC, srcData))
}
if gateway != "" {