我在本地 Linux 服务器上使用 iptables 防火墙。日志告诉我,我的路由器(Fritz 盒子)在网络上有连续的多播。这是正常行为吗?我应该允许此流量吗?
[633912.348130] IPTables Packet Dropped: IN=enp3s0 OUT= MAC=01:00:5e:00:00:01:xx:xx:xx:xx:xx:xx:xx:xx SRC=192.168.178.1 DST=224.0.0.1 LEN=36 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2
[634912.348130] IPTables Packet Dropped: IN=enp3s0 OUT= MAC=01:00:5e:00:00:01:xx:xx:xx:xx:xx:xx:xx:xx SRC=192.168.178.1 DST=224.0.0.1 LEN=36 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2
[635037.322691] IPTables Packet Dropped: IN=enp3s0 OUT= MAC=01:00:5e:00:00:01:xx:xx:xx:xx:xx:xx:xx:xx SRC=192.168.178.1 DST=224.0.0.1 LEN=36 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2
[635287.169456] IPTables Packet Dropped: IN=enp3s0 OUT= MAC=01:00:5e:00:00:01:xx:xx:xx:xx:xx:xx:xx:xx SRC=192.168.178.1 DST=224.0.0.1 LEN=36 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2
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