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net.ipv4.icmp_echo_ignore_broadcasts = 1
nastavil som to takto:
ifconfig eth0 192.168.0.1 netmask 255.255.255.0 up
ifconfig eth0:0 192.168.0.2 netmask 255.255.255.0 up
ifconfig eth0:1 192.168.0.3 netmask 255.255.255.0 up
potom som nastavil routy
route add -host 192.168.0.1 dev eth0
route add -host 192.168.0.2 dev eth0:0
route add -host 192.168.0.3 dev eth0:1
route add -net 192.168.0.0/24 gw 192.168.0.1
a vysledny ping:
ping -b 192.168.0.255
WARNING: pinging broadcast address
PING 192.168.0.255 (192.168.0.255) 56(84) bytes of data.
64 bytes from 192.168.0.1: icmp_req=1 ttl=64 time=0.047 ms
64 bytes from 192.168.0.1: icmp_req=2 ttl=64 time=0.044 ms
64 bytes from 192.168.0.1: icmp_req=3 ttl=64 time=0.044 ms
64 bytes from 192.168.0.1: icmp_req=4 ttl=64 time=0.048 ms
^C
--- 192.168.0.255 ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 2997ms
rtt min/avg/max/mdev = 0.044/0.045/0.048/0.008 ms
takze to "ide"
ale co nechapem je, ze ked si zapnem tcpdump a idem pozriet ci to na tu alias sietovku fakt chodi, tak to nic nevypisuje, viac konkretne:
ping -I 192.168.0.1 192.168.0.2
sudo tcpdump -i eth0:0 -p icmp
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on eth0:0, link-type EN10MB (Ethernet), capture size 65535 bytes
a este, nemal by ten broadcastovy ping nejako striedavo vypisovat pingy zo vsetkych ipciek v sieti? teda tak ja chapem broadcasting, preco to pise len 192.168.0.1?
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