Running Shorewall v5.0.14.1 on Fedora Server 4.8.15-200.fc24.x86_64 configured with two interfaces (br0 and team0). Interface br0 connects to Internet while the team0 interface connects wireless local devices (LAN) (printers, tablets, roku, etc.). The team device is configured for loadbalancing using two nics. Additionally, DHCP and DNS answer requests on team0 interface. Shorewall flags broadcasts as martians. Intermittently devices sending requests to DHCP are also flagged as martians. Sample of messages appear as follows (first is broadcast; second is device requesting IP address:

Jan 9 15:42:09 roxie kernel: IPv4: martian source from, on dev team0

Jan 9 15:42:09 roxie kernel: ll header: 00000000: ff ff ff ff ff ff 00 16 3e 3c 20 a1 08 00 ........>< ..

Jan 9 15:51:04 roxie kernel: IPv4: martian source from, on dev team0

Interface Info: Shorewall Interface: wr0 team0 dhcp,tcpflags,upnp,maclist,nets=,physical=team0,routeback,routefilter,arp_filter=0,logmartians

ip link show team0 (ip address - 6: team0: mtu 1500 qdisc noqueue state UP mode DEFAULT group default qlen 1000 link/ether 00:16:3e:3c:20:a1 brd ff:ff:ff:ff:ff:ff

cat /etc/sysconfig/network-scripts/ifcfg-team0 DEVICE="team0" DEVICETYPE="Team" BOOTPROTO=none DEFROUTE=yes NETMASK= IPADDR= TEAM_CONFIG='{"runner": {"name": "loadbalance"}, "tx_hash": ["eth", "ipv4"], "tx_balancer": {"name": "basic"}}' MTU="9000" IPV4INIT=yes IPV4_FAILURE_FATAL=no IPV6INIT=no IPV6_AUTOCONF=no IPV6_DEROUTE=no IPV6_FAILURE_FATAL=no NAME=team0 ONBOOT="yes

My question(s): Is there a configuration error in device team0 shorewall interface configuration causing this behavior? Is there a troubleshooting method to isolate this behavior?

Thanks in advance.

  • Please show your interface configuration, e.g. ip a – Michael Hampton Jan 9 '17 at 22:12
  • Line near bottom beginning with "Interface" is team0 entry in shorewall's interface file. – FlashL Jan 9 '17 at 22:24
  • You made a lot of statements but haven't actually asked a question. – Iain Jan 9 '17 at 22:25
  • Sorry you're right. Wondered if team0 shorewall interface looks misconfigured and causing martian reporting. If interface is not misconfigured, need assistance isolating / troubleshooting described behavior. – FlashL Jan 9 '17 at 22:34
  • You could start by providing the information I asked for. – Michael Hampton Jan 10 '17 at 2:00

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