Отсутствие маршрута в ip_conntrack и в cache

192.168.20.240/28 via 10.70.255.253 dev eth1
192.168.23.240/28 via 10.70.255.253 dev eth1

[root@server sysconfig]# ip r g 192.168.27.242
192.168.27.242 via 10.70.255.253 dev eth1  src 10.70.255.254
    cache  ipid 0x70d9 mtu 1500 advmss 1460 hoplimit 64

[root@server sysconfig]# ip r g 192.168.20.248
192.168.20.248 via 10.70.255.253 dev eth1  src 10.70.255.254
    cache  mtu 1500 advmss 1460 hoplimit 64

[root@server sysconfig]# ip route show cache |grep 192.168.28.242
192.168.28.242 from 10.70.255.254 via 10.70.255.253 dev eth1
local 10.70.255.254 from 192.168.28.242 tos throughput dev lo  src 10.70.255.254
192.168.28.242 via 10.70.255.253 dev eth1  src 10.70.255.254

[root@secver sysconfig]# ip route show cache |grep 192.168.20.248
192.168.20.248 via 10.70.255.253 dev eth1  src 10.70.255.254
192.168.20.248 from 10.70.255.254 via 10.70.255.253 dev eth1

[root@server sysconfig]# cat /proc/net/ip_conntrack|grep 192.168.20

[root@server sysconfig]#  cat /proc/net/ip_conntrack|grep 192.168.28
udp      17 143 src=10.70.255.254 dst=192.168.28.240 sport=5060 dport=5060 packets=19 bytes=10783 src=192.168.28.240 dst=10.70.255.254 sport=5060 dport=5060 packets=20 bytes=11680 [ASSURED] mark=0 secmark=0 use=1
udp      17 126 src=192.168.28.240 dst=10.70.255.254 sport=16486 dport=12090 packets=1275 bytes=255000 src=10.70.255.254 dst=192.168.28.240 sport=12090 dport=16486 packets=1255 bytes=251000 [ASSURED] mark=0 secmark=0 use=1
udp      17 125 src=192.168.28.244 dst=10.70.255.254 sport=5060 dport=5060 packets=13 bytes=7880 src=10.70.255.254 dst=192.168.28.244 sport=5060 dport=5060 packets=14 bytes=8612 [ASSURED] mark=0 secmark=0 use=1
udp      17 159 src=192.168.28.241 dst=10.70.255.254 sport=5060 dport=5060 packets=7 bytes=3496 src=10.70.255.254 dst=192.168.28.241 sport=5060 dport=5060 packets=7 bytes=4100 [ASSURED] mark=0 secmark=0 use=1
udp      17 165 src=192.168.28.243 dst=10.70.255.254 sport=5060 dport=5060 packets=7 bytes=3489 src=10.70.255.254 dst=192.168.28.243 sport=5060 dport=5060 packets=7 bytes=4100 [ASSURED] mark=0 secmark=0 use=1
udp      17 125 src=10.70.255.254 dst=192.168.28.244 sport=15080 dport=16474 packets=1264 bytes=252800 src=192.168.28.244 dst=10.70.255.254 sport=16474 dport=15080 packets=1255 bytes=251000 [ASSURED] mark=0 secmark=0 use=1

[root@server sysconfig]# uname -a
Linux aster 2.6.18-371.6.1.el5 #1 SMP Wed Mar 12 20:03:51 EDT 2014 x86_64 x86_64 x86_64 GNU/Linux

[root@server sysconfig]# rpm -qf /sbin/ip
iproute-2.6.18-15.el5