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-------- Mensaje original -------- On 17 ene. 2020 17:26, Emil Pedersen escribió: > --On 17 januari 2020 16:06:20 +0100 Leonardo Boselli <[email protected]> > wrote: > >> subnet with some server (fixed public IP addresses), workstation (same, >> assigned by dhcp), portable (dhcp dynamic), peripherals using only link >> local fe80:: IPv6 addresses. >> All was fine until arrived a couple of peripherals that get their IPv4 >> address via dhcp and there is no way to avoid them to get it, even if you >> access then only via IPv6 . >> I have added in the imcluded file that assign always the same address to >> workstations based on mac addresses record as >> >> host XRX0000AABBCCDD { >> hardware ethernet 00:00:aa:bb:cc:dd; >> fixed-address 10.240.13.112; >> option routers 10.240.13.1; >> option subnet-mask 255.255.255.0; >> } >> >> but the resut is that while addresse in the "real" subnet assigned to >> workstations works fine an are correctly assigned, peripherals insist on >> getting public addresses from the pool of portables, that is something i >> do not want. >> How can i assign completely invalid (or better, unrouted) IPv4 addresses ? >> >> -- >> Leonardo Boselli >> DICEA >> tel +39 0552758808 +39 3488605348 >> >> > > Just to check, do you have a specification for the "invalid" subnet in some > way in the dhcp server pointing in the same direction as the "good" subnet? > > It was quite a long time since I messed with dhcp so I may be wrong but I > think that is required for what you want. Like setting an extra (invalid) > address on the same interface and maybe a shared network wrapping with both > of the networks in the dhcp config (no available addresses for the bad one > except the one fixed to the device). > > // Emil
