ubuntu-14.04 - por que só consigo conectar em uma interface Ethernet

ubuntu-14.04 - por que só consigo conectar em uma interface Ethernet

Tenho várias interfaces em um servidor, mas só consigo conectar em uma delas, não consigo fazer ping na outra, não entendo por quê. Os endereços IP são fornecidos por um servidor DHCP, as interfaces os recebem. O único acessível é p10p1.

bond0recebe o IP correto, mas fica inacessível e inutilizável, pois tento ping -I bond0 whatevere nada é retornado.

Alguma sugestão? Eu estou perdido.

Aqui está a saída do ifconfig:

bond0 Link encap:Ethernet  HWaddr 3e:6d:0e:b0:27:f9
      inet addr:10.194.121.34  Bcast:10.194.121.255  Mask:255.255.255.0
      inet6 addr: fe80::3c6d:eff:feb0:27f9/64 Scope:Link
      UP BROADCAST RUNNING MASTER MULTICAST  MTU:1500  Metric:1
      RX packets:0 errors:0 dropped:0 overruns:0 frame:0
      TX packets:21 errors:0 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:0
      RX bytes:0 (0.0 B)  TX bytes:5663 (5.6 KB)

em1   Link encap:Ethernet  HWaddr 3e:6d:0e:b0:27:f9
      UP BROADCAST RUNNING SLAVE MULTICAST  MTU:1500  Metric:1
      RX packets:0 errors:0 dropped:0 overruns:0 frame:0
      TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:1000
      RX bytes:0 (0.0 B)  TX bytes:2510 (2.5 KB)
      Memory:fb320000-fb340000

em2   Link encap:Ethernet  HWaddr 3e:6d:0e:b0:27:f9
      UP BROADCAST RUNNING SLAVE MULTICAST  MTU:1500  Metric:1
      RX packets:0 errors:0 dropped:0 overruns:0 frame:0
      TX packets:13 errors:0 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:1000
      RX bytes:0 (0.0 B)  TX bytes:3153 (3.1 KB)
      Memory:fb300000-fb320000

ham0  Link encap:Ethernet  HWaddr 7a:79:19:33:bc:e7
      inet addr:25.51.188.231  Bcast:25.255.255.255  Mask:255.0.0.0
      inet6 addr: 2620:9b::1933:bce7/96 Scope:Global
      inet6 addr: fe80::7879:19ff:fe33:bce7/64 Scope:Link
      UP BROADCAST RUNNING MULTICAST  MTU:1404  Metric:1
      RX packets:0 errors:0 dropped:0 overruns:0 frame:0
      TX packets:110 errors:0 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:500
      RX bytes:0 (0.0 B)  TX bytes:23639 (23.6 KB)

lo    Link encap:Local Loopback
      inet addr:127.0.0.1  Mask:255.0.0.0
      inet6 addr: ::1/128 Scope:Host
      UP LOOPBACK RUNNING  MTU:65536  Metric:1
      RX packets:114 errors:0 dropped:0 overruns:0 frame:0
      TX packets:114 errors:0 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:0
      RX bytes:18316 (18.3 KB)  TX bytes:18316 (18.3 KB)

p10p1 Link encap:Ethernet  HWaddr a0:36:9f:c0:b9:20
      inet addr:10.194.121.35  Bcast:10.194.121.255  Mask:255.255.255.0
      inet6 addr: fd69:620:600:121:a236:9fff:fec0:b920/64 Scope:Global
      inet6 addr: fdf9:620:600:121:a236:9fff:fec0:b920/64 Scope:Global
      inet6 addr: fe80::a236:9fff:fec0:b920/64 Scope:Link
      UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
      RX packets:20177 errors:0 dropped:0 overruns:0 frame:0
      TX packets:1281 errors:0 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:1000
      RX bytes:1433816 (1.4 MB)  TX bytes:158707 (158.7 KB)

O conteúdo de /etc/network/interfacesé

auto lo
iface lo inet loopback

auto em1
iface em1 inet manual
bond-master bond0

auto em2
iface em2 inet manual
bond-master bond0

auto bond0
iface bond0 inet dhcp
hwaddress 3e:6d:0e:b0:27:f9
bond-mode 4
bond-miion 100
bond-lacp-rate 1
bond-slave em1 em2

auto p10p1
iface p10p1 inet dhcp

Regras do iptables:

Chain INPUT (policy ACCEPT)
target     prot opt source               destination
ACCEPT     udp  --  anywhere             anywhere             multiport dports mdns
ACCEPT     tcp  --  anywhere             anywhere             multiport dports 4000

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination

EDITAR

Aqui estão alguns dos tcpdumpresultados:

listening on bond0, link-type EN10MB (Ethernet), capture size 262144 bytes
16:31:51.519853 LACPv1, length 110
16:31:53.094920 LACPv1, length 110
16:31:58.571537 DTPv1, length 38
16:31:58.571605 78:ba:f9:d4:04:b1 (oui Unknown) > 01:00:0c:00:00:00 (oui Unknown) SNAP, oui Cisco (0x00000c), pid Unknown (0x0003), length 68:
    0x0000:  aaaa 0300 000c 0003 0000 0000 0100 0ccc  ................
    0x0010:  cccc 78ba f9d4 04b1 0027 aaaa 0300 000c  ..x......'......
    0x0040:  b100 1c00 0000 0100 72bb 416e            ........r.An
16:31:59.628587 DTPv1, length 38
16:31:59.628623 54:a2:74:2e:0c:71 (oui Unknown) > 01:00:0c:00:00:00 (oui Unknown) SNAP, oui Cisco (0x00000c), pid Unknown (0x0003), length 68:
    0x0000:  aaaa 0300 000c 0003 0000 0000 0100 0ccc  ................
    0x0010:  cccc 54a2 742e 0c71 0027 aaaa 0300 000c  ..T.t..q.'......
    0x0040:  7102 000f 0000 0000 594b c650            q.......YK.P
^C
6 packets captured
6 packets received by filter
0 packets dropped by kernel

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