Server does not see ICMP Echo Replies (ping does not work).
RHEL 7.2
When I perform a ping and specify the subnet (corresponding to a VLAN) I want to ping from the network seems to work but I see nothing on the ssh session. It pretends it can't see the echo replies.
[root@server01 ~]# ping 10.0.0.10 -I 10.4.1.100 PING 10.0.0.10 (10.0.0.10) from 10.4.1.100 : 56(84) bytes of data.
But if I do a tcpdump I see the echo replies coming in->
[root@server01 ~]# tcpdump -i seanbond -p icmp tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on seanbond, link-type EN10MB (Ethernet), capture size 65535 bytes 10:59:32.930803 IP 10.4.1.100 > 10.0.0.10: ICMP echo request, id 2623, seq 68, length 64 10:59:32.935925 IP 10.0.0.10 > 10.4.1.100: ICMP echo reply, id 2623, seq 68, length 64 10:59:33.930877 IP 10.4.1.100 > 10.0.0.10: ICMP echo request, id 2623, seq 69, length 64 10:59:33.936860 IP 10.0.0.10 > 10.4.1.100: ICMP echo reply, id 2623, seq 69, length 64 10:59:34.930801 IP 10.4.1.100 > 10.0.0.10: ICMP echo request, id 2623, seq 70, length 64 10:59:34.932898 IP 10.0.0.10 > 10.4.1.100: ICMP echo reply, id 2623, seq 70, length 64
The server01 is configured with a bond (seanbond) that carries 6 VLANs (sub-interfaces).
Here is the output of ip addr show
[root@server01 ~]# ip addr show 1: lo:mtu 65536 qdisc noqueue state UNKNOWN link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: vagrant: mtu 1500 qdisc pfifo_fast state UP qlen 1000 link/ether 52:54:00:af:03:40 brd ff:ff:ff:ff:ff:ff inet 192.168.121.121/24 brd 192.168.121.255 scope global dynamic vagrant valid_lft 2513sec preferred_lft 2513sec inet6 fe80::5054:ff:feaf:340/64 scope link valid_lft forever preferred_lft forever 3: oob: mtu 1500 qdisc pfifo_fast state UP qlen 1000 link/ether a0:00:00:00:00:31 brd ff:ff:ff:ff:ff:ff inet 192.168.0.121/24 brd 192.168.0.255 scope global dynamic oob valid_lft 171713sec preferred_lft 171713sec inet6 fe80::a200:ff:fe00:31/64 scope link valid_lft forever preferred_lft forever 4: uplink1: mtu 1500 qdisc pfifo_fast master seanbond state UP qlen 1000 link/ether 44:38:39:00:00:4c brd ff:ff:ff:ff:ff:ff 5: uplink2: mtu 1500 qdisc pfifo_fast master seanbond state UP qlen 1000 link/ether 44:38:39:00:00:4c brd ff:ff:ff:ff:ff:ff 6: seanbond: mtu 1500 qdisc noqueue state UP link/ether 44:38:39:00:00:4c brd ff:ff:ff:ff:ff:ff inet 10.1.0.100/24 brd 10.1.0.255 scope global seanbond valid_lft forever preferred_lft forever inet6 fe80::9420:e8ff:fe3f:dbf/64 scope link valid_lft forever preferred_lft forever 7: seanbond.211@seanbond: mtu 1500 qdisc noqueue state UP link/ether 44:38:39:00:00:4c brd ff:ff:ff:ff:ff:ff inet 10.211.0.100/16 brd 10.211.255.255 scope global seanbond.211 valid_lft forever preferred_lft forever inet6 fe80::4638:39ff:fe00:4c/64 scope link valid_lft forever preferred_lft forever 8: seanbond.221@seanbond: mtu 1500 qdisc noqueue state UP link/ether 44:38:39:00:00:4c brd ff:ff:ff:ff:ff:ff inet 10.1.129.100/24 brd 10.1.129.255 scope global seanbond.221 valid_lft forever preferred_lft forever inet6 fe80::4638:39ff:fe00:4c/64 scope link valid_lft forever preferred_lft forever 9: seanbond.210@seanbond: mtu 1500 qdisc noqueue state UP link/ether 44:38:39:00:00:4c brd ff:ff:ff:ff:ff:ff inet 10.4.1.100/24 brd 10.4.1.255 scope global seanbond.210 valid_lft forever preferred_lft forever inet6 fe80::4638:39ff:fe00:4c/64 scope link valid_lft forever preferred_lft forever 10: seanbond.205@seanbond: mtu 1500 qdisc noqueue state UP link/ether 44:38:39:00:00:4c brd ff:ff:ff:ff:ff:ff inet 10.180.0.100/24 brd 10.180.0.255 scope global seanbond.205 valid_lft forever preferred_lft forever inet6 fe80::4638:39ff:fe00:4c/64 scope link valid_lft forever preferred_lft forever 11: seanbond.1201@seanbond: mtu 1500 qdisc noqueue state UP link/ether 44:38:39:00:00:4c brd ff:ff:ff:ff:ff:ff inet 10.222.0.100/16 brd 10.222.255.255 scope global seanbond.1201 valid_lft forever preferred_lft forever inet6 fe80::4638:39ff:fe00:4c/64 scope link valid_lft forever preferred_lft forever 12: seanbond.213@seanbond: mtu 1500 qdisc noqueue state UP link/ether 44:38:39:00:00:4c brd ff:ff:ff:ff:ff:ff inet 10.213.0.100/16 brd 10.213.255.255 scope global seanbond.213 valid_lft forever preferred_lft forever inet6 fe80::4638:39ff:fe00:4c/64 scope link valid_lft forever preferred_lft forever
Is there some other setting that would keep default 7.2 from responding to ping? Whats really weird is if I ping on the default subnet (still tagged) this works fine->
[root@server01 ~]# ping 10.0.0.10 -I 10.180.0.100 PING 10.0.0.10 (10.0.0.10) from 10.180.0.100 : 56(84) bytes of data. 64 bytes from 10.0.0.10: icmp_seq=1 ttl=63 time=3.30 ms 64 bytes from 10.0.0.10: icmp_seq=2 ttl=63 time=6.45 ms 64 bytes from 10.0.0.10: icmp_seq=3 ttl=63 time=1.91 ms 64 bytes from 10.0.0.10: icmp_seq=4 ttl=63 time=10.7 ms
Responses