+----------+
                  |   SRV    |
                  +----------+
 ETH2 (192.168.1.10) |     | ETH3 (192.168.2.11)
                     |     |
                     |     |
  ETH2 (192.168.1.1) |     | ETH3 (192.168.2.1)
                  +----------+
                  |   ADSL   |
                  +----------+

default via 192.168.1.1 dev eth2
10.0.2.0/24 dev eth0 proto kernel scope link src 10.0.2.15
192.168.1.0/24 dev eth2 proto kernel scope link src 192.168.1.10
192.168.2.0/24 dev eth3 proto kernel scope link src 192.168.2.11
192.168.10.0/24 dev eth1 proto kernel scope link src 192.168.10.1
192.168.13.0/24 dev admin.tinc proto kernel scope link src 192.168.13.1

default via 192.168.1.1 dev eth2
192.168.1.0/24 dev eth2 scope link src 192.168.1.10

default via 192.168.2.1 dev eth3
192.168.2.0/24 dev eth3 scope link src 192.168.2.11

0:      from all lookup local
32762:  from all to 192.168.1.0/24 lookup adsl1
32763:  from all to 192.168.2.0/24 lookup adsl2
32764:  from 192.168.2.0/24 lookup adsl2
32765:  from 192.168.1.0/24 lookup adsl1
32766:  from all lookup main
32767:  from all lookup default

PING google.com (216.58.214.14) from 192.168.1.10 eth2: 56(84) bytes of
data.
64 bytes from lhr26s05-in-f14.1e100.net (216.58.214.14): icmp_seq=1 ttl=61
time=20.2 ms

--- google.com ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 20.288/20.288/20.288/0.000 ms

PING google.com (216.58.213.110) from 192.168.2.11 eth3: 56(84) bytes of
data.

--- google.com ping statistics ---
1 packets transmitted, 0 received, 100% packet loss, time 0ms

tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on eth3, link-type EN10MB (Ethernet), capture size 262144 bytes
20:26:32.207178 ARP, Request who-has lhr35s11-in-f14.1e100.net tell 192.168.2.11, length 28
20:26:33.221587 ARP, Request who-has lhr35s11-in-f14.1e100.net tell 192.168.2.11, length 28

tcpdump: listening on eth3, link-type EN10MB (Ethernet), capture size 262144 bytes
21:41:51.865488 IP (tos 0x0, ttl 64, id 31173, offset 0, flags [DF], proto ICMP (1), length 84)
    192.168.2.11 > google-public-dns-a.google.com: ICMP echo request, id 2962, seq 1, length 64
21:41:51.866542 IP (tos 0x0, ttl 64, id 18679, offset 0, flags [DF], proto UDP (17), length 71)
    192.168.2.11.36067 > one.one.one.one.domain: [bad udp cksum 0xc4f9 -> 0xb220!] 31965+ PTR? 11.2.168.192.in-addr.arpa. (43)
21:41:51.885947 IP (tos 0x0, ttl 61, id 4776, offset 0, flags [DF], proto ICMP (1), length 84)
    google-public-dns-a.google.com > 192.168.2.11: ICMP echo reply, id 2962, seq 1, length 64

8.8.8.8 dev eth3 src 192.168.2.11
    cache  users 1