diff --git a/src/main/tools/linux-sandbox-pid1.cc b/src/main/tools/linux-sandbox-pid1.cc index 7c7a2f54014200..8160e4dc98bb01 100644 --- a/src/main/tools/linux-sandbox-pid1.cc +++ b/src/main/tools/linux-sandbox-pid1.cc @@ -443,6 +443,15 @@ static void SetupNetworking() { DIE("close"); } } + + if(opt.create_netns == NO_NETNS || !opt.fake_root){ + return; + } + //within network namespace, must write /proc/sys/net/ipv4/ping_group_range + //to valid group id, otherwise default value 1 0 can't map back to valid gid + //prevent IPPROTO_ICMP from working. + //due to current kernel limitation, this only possible when mapped user is root + WriteFile("/proc/sys/net/ipv4/ping_group_range", "0 0"); } static void EnterWorkingDirectory() {