Hier die Ergebnisse für die Abfragen:
Host
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master br0 state UP mode DEFAULT qlen 1000
link/ether 74:d4:35:ef:85:56 brd ff:ff:ff:ff:ff:ff
3: eth1: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast state DOWN mode DEFAULT qlen 1000
link/ether 74:d4:35:ef:85:54 brd ff:ff:ff:ff:ff:ff
4: br0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP mode DEFAULT
link/ether 74:d4:35:ef:85:56 brd ff:ff:ff:ff:ff:ff
5: vnet0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master br0 state UNKNOWN mode DEFAULT qlen 500
link/ether fe:54:00:8e:74:61 brd ff:ff:ff:ff:ff:ff
6: docker0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN mode DEFAULT
link/ether de:72:62:c8:68:20 brd ff:ff:ff:ff:ff:ff
VM
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT group default qlen 1000
link/ether 52:54:00:8e:74:61 brd ff:ff:ff:ff:ff:ff
Auch nach dem Heruntersetzen der MTU, kann ich trotdem immer noch nicht drauf zugreifen.
Hier ein tcpdump von der VM, mit Zugriff aus dem lokalen Netz
2016-10-12 03:27:17.764173 IP 192.168.178.163.6250 > 192.168.178.11.80: Flags [S], seq 2898601153, win 8192, options [mss 1460,nop,wscale 2,nop,nop,sackOK], length 0
2016-10-12 03:27:17.764253 IP 192.168.178.11.80 > 192.168.178.163.6250: Flags [S.], seq 1113858826, ack 2898601154, win 29200, options [mss 1460,nop,nop,sackOK,nop,wscale 7], length 0
2016-10-12 03:27:17.764660 IP 192.168.178.163.6250 > 192.168.178.11.80: Flags [.], ack 1, win 16425, length 0
2016-10-12 03:27:17.766783 IP 192.168.178.163.6250 > 192.168.178.11.80: Flags [P.], seq 1:396, ack 1, win 16425, length 395
2016-10-12 03:27:17.766868 IP 192.168.178.11.80 > 192.168.178.163.6250: Flags [.], ack 396, win 237, length 0
2016-10-12 03:27:18.928146 IP 192.168.178.11.80 > 192.168.178.163.6250: Flags [.], seq 1:1461, ack 396, win 237, length 1460
2016-10-12 03:27:18.928395 IP 192.168.178.11.80 > 192.168.178.163.6250: Flags [P.], seq 1461:2636, ack 396, win 237, length 1175
2016-10-12 03:27:18.928930 IP 192.168.178.163.6250 > 192.168.178.11.80: Flags [.], ack 2636, win 16425, length 0
2016-10-12 03:27:23.933814 IP 192.168.178.11.80 > 192.168.178.163.6250: Flags [F.], seq 2636, ack 396, win 237, length 0
2016-10-12 03:27:23.934686 IP 192.168.178.163.6250 > 192.168.178.11.80: Flags [.], ack 2637, win 16425, length 0
2016-10-12 03:27:23.935164 IP 192.168.178.163.6250 > 192.168.178.11.80: Flags [F.], seq 396, ack 2637, win 16425, length 0
2016-10-12 03:27:23.935196 IP 192.168.178.11.80 > 192.168.178.163.6250: Flags [.], ack 397, win 237, length 0
Hier der tcpdump von der VM bei Zugriff von außen
2016-10-12 03:28:12.588523 IP 95.208.159.55.6286 > 192.168.178.11.80: Flags [S], seq 4222305606, win 8192, options [mss 1460,nop,wscale 2,nop,nop,sackOK], length 0
2016-10-12 03:28:12.588611 IP 192.168.178.11.80 > 95.208.159.55.6286: Flags [S.], seq 2215227872, ack 4222305607, win 29200, options [mss 1460,nop,nop,sackOK,nop,wscale 7], length 0
2016-10-12 03:28:12.590672 IP 95.208.159.55.6286 > 192.168.178.11.80: Flags [.], ack 1, win 16425, length 0
2016-10-12 03:28:12.682230 IP 95.208.159.55.6286 > 192.168.178.11.80: Flags [P.], seq 1:418, ack 1, win 16425, length 417
2016-10-12 03:28:12.682316 IP 192.168.178.11.80 > 95.208.159.55.6286: Flags [.], ack 418, win 237, length 0
2016-10-12 03:28:12.700915 IP 192.168.178.11.80 > 95.208.159.55.6286: Flags [P.], seq 1:752, ack 418, win 237, length 751
2016-10-12 03:28:12.702088 IP 192.168.178.11.80 > 95.208.159.55.6286: Flags [P.], seq 752:757, ack 418, win 237, length 5
2016-10-12 03:28:12.702516 IP 95.208.159.55.6286 > 192.168.178.11.80: Flags [.], ack 757, win 16236, length 0
2016-10-12 03:28:17.707596 IP 192.168.178.11.80 > 95.208.159.55.6286: Flags [F.], seq 757, ack 418, win 237, length 0
2016-10-12 03:28:17.709488 IP 95.208.159.55.6286 > 192.168.178.11.80: Flags [.], ack 758, win 16236, length 0
2016-10-12 03:28:17.710243 IP 95.208.159.55.6286 > 192.168.178.11.80: Flags [F.], seq 418, ack 758, win 16236, length 0
2016-10-12 03:28:17.710298 IP 192.168.178.11.80 > 95.208.159.55.6286: Flags [.], ack 419, win 237, length 0