3 ms·
PING 127.12.34.56 (127.12.34.56): 56 data bytes Request timeout for icmp_seq 0 There's also ip unnumbered where an interface can reuse ip from one interface (t
by Hikikomori 2y ago
PING 127.12.34.56 (127.12.34.56): 56 data bytes
Request timeout for icmp_seq 0
There's also ip unnumbered where an interface can reuse ip from one interface (typically from loopback) on other interfaces.
- blueflow 2y agoYou changed your interface to not implement RFC 5735: 127.0.0.0/8 - This block is assigned for use as the Internet host loopback address. A datagram sent by a higher-level protocol to an address anywhere within this block loops back inside the host. This is ordinarily implemented using only 127.0.0.1/32 for loopback. -- https://datatracker.ietf.org/doc/html/rfc5735#section-3 https://datatracker.ietf.org/doc/html/rfc5735#section-3 An ICMP Ping is a datagram in the sense of the second sentence.
- Hikikomori 2y agoNo, I'm just on a mac. Also: This is ordinarily implemented using only 127.0.0.1/32 for loopback.
- cryptonector 2y agoOn Linux it has a larger netmask and you can have multiple loopback addresses.
- ArchOversight 2y agoOn MacOS it has a larger net mask, but the OS doesn't respond to any address within that range automatically. lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384 options=1203<RXCSUM,TXCSUM,TXSTATUS,SW_TIMESTAMP> inet 127.0.0.1 netmask 0xff000000 inet6 ::1 prefixlen 128 inet6 fe80::1%lo0 prefixlen 64 scopeid 0x1 nd6 options=201<PERFORMNUD,DAD>