一个很奇怪的问题

[bert1020]

我电脑有三个网卡

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: enp4s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
    link/ether 00:e0:4c:68:a9:91 brd ff:ff:ff:ff:ff:ff
    inet 192.168.1.110/24 brd 192.168.1.255 scope global noprefixroute enp4s0
       valid_lft forever preferred_lft forever
    inet6 fe80::db53:9a7:e0e1:373e/64 scope link noprefixroute 
       valid_lft forever preferred_lft forever
3: enp5s0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc fq_codel state DOWN group default qlen 1000
    link/ether e2:00:e8:f3:b6:7a brd ff:ff:ff:ff:ff:ff
4: wlp2s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether 90:2e:1c:03:cf:28 brd ff:ff:ff:ff:ff:ff
    inet 192.168.1.100/24 brd 192.168.1.255 scope global dynamic noprefixroute wlp2s0
       valid_lft 86382sec preferred_lft 86382sec
    inet6 fe80::b394:ca1e:4707:8251/64 scope link noprefixroute 
       valid_lft forever preferred_lft forever

正常使用的是enp4s0, ,当我开启enp5s0时,我只能发送消息,反馈的消息收不到,当我关闭之后,重启一下服务就正常了,不重启服务也不行.所以我感觉链接里面把这个也考虑进去了,是否应该这种没有ip过滤掉. 这个途中我一直没有用enp5s0建立连接,但他的开启和关闭依然能影响到我.
enp5s0 只是一个多余的网卡,并没有ip地址