Podłączam właśnie zegar czasu rzeczywistego do RPI, jak się nie zjara to działamy dalej
astroberry@astroberry:~ $ ip a
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: eth0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN group default qlen 1000
link/ether e4:5f:01:4a:24:f2 brd ff:ff:ff:ff:ff:ff
3: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
link/ether e4:5f:01:4a:24:f3 brd ff:ff:ff:ff:ff:ff
inet 10.42.0.1/24 brd 10.42.0.255 scope global noprefixroute wlan0
valid_lft forever preferred_lft forever
inet 169.254.239.81/16 brd 169.254.255.255 scope global noprefixroute wlan0
valid_lft forever preferred_lft forever
inet6 fe80::5684:2699:ab8c:1337/64 scope link noprefixroute
valid_lft forever preferred_lft forever
inet6 fe80::3cf5:2af5:8bb:3f29/64 scope link noprefixroute
valid_lft forever preferred_lft forever
astroberry@astroberry:~ $ ip r sh
default dev wlan0 scope link src 169.254.239.81 metric 303
10.42.0.0/24 dev wlan0 proto kernel scope link src 10.42.0.1 metric 600
169.254.0.0/16 dev wlan0 scope link src 169.254.239.81 metric 303
astroberry@astroberry:~ $ ip r get 10.42.0.245
10.42.0.245 dev wlan0 src 10.42.0.1 uid 1001
cache
astroberry@astroberry:~ $