This bug is missing log files that will aid in diagnosing the problem.
>From a terminal window please run:
apport-collect 1652946
and then change the status of the bug to 'Confirmed'.
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This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.
** Changed in: linux (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1652946
Title:
Vlan on physical interface breaks TCP
Status in linux package in Ubuntu:
Incomplete
Bug description:
### More info:
http://serverfault.com/questions/820689/tcp-handshake-error-syn-and-syn-ack-packets-are-not-recognised/
### Kernel version
```bash
# uname -a
Linux docker-host 4.4.0-31-generic #50-Ubuntu SMP Wed Jul 13 00:07:12 UTC
2016 x86_64 x86_64 x86_64 GNU/Linux
```
### Step to reproduce:
- I use proxmox hypervisor and create virtual machine with virtio nic
- Take ubuntu-server 16.04.1
https://www.ubuntu.com/download/server/thank-you?version=16.04.1&architecture=amd64
- Install in minimal installation
- Execute:
```bash
# ip link add link ens18 name ens18.111 type vlan id 111
# ip addr add 192.168.111.80/24 dev ens18.111
# ip link set ens18.111 up
# ping 192.168.111.1
PING 192.168.111.1 (192.168.111.1) 56(84) bytes of data.
64 bytes from 192.168.111.1: icmp_seq=1 ttl=64 time=17.9 ms
64 bytes from 192.168.111.1: icmp_seq=2 ttl=64 time=18.8 ms
64 bytes from 192.168.111.1: icmp_seq=3 ttl=64 time=18.5 ms
^C
--- 192.168.111.1 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2002ms
rtt min/avg/max/mdev = 17.932/18.455/18.841/0.414 m
# nslookup
> server 192.168.111.1
Default server: 192.168.111.1
Address: 192.168.111.1#53
> google.com
Server: 192.168.111.1
Address: 192.168.111.1#53
Non-authoritative answer:
Name: google.com
Address: 173.194.222.139
Name: google.com
Address: 173.194.222.113
Name: google.com
Address: 173.194.222.100
Name: google.com
Address: 173.194.222.102
Name: google.com
Address: 173.194.222.138
Name: google.com
Address: 173.194.222.101
> type cv
Server: 192.168.111.1
Address: 192.168.111.1#53
** server can't find type: NXDOMAIN
> google.com
;; connection timed out; no servers could be reached
^C
```
I tested this issue on arch linux iso and it's work properly
```bash
# uname -a
Linux archiso 4.8.11-1-ARCH #1 SMP PREEMPT SUN Nov 27 09:26:14 CET 2016
x86_64 FNU/Linux
```
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