diff options
Diffstat (limited to 'src/dhcpv4.c')
| -rw-r--r-- | src/dhcpv4.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/src/dhcpv4.c b/src/dhcpv4.c index 7b200cd..d978da8 100644 --- a/src/dhcpv4.c +++ b/src/dhcpv4.c @@ -334,7 +334,16 @@ static void handle_dhcpv4(void *addr, void *data, size_t len, } else if (reqmsg == DHCPV4_MSG_REQUEST && reqaddr.s_addr && reqaddr.s_addr != htonl(lease->addr)) { msg = DHCPV4_MSG_NAK; - lease = NULL; + /* + * DHCP client requested an IP which we can't offer to him. Probably the + * client changed the network. The reply type is set to DHCPV4_MSG_NAK, + * because the client should not use that IP. + * + * For modern devices we build an answer that includes a valid IP, like + * a DHCPV4_MSG_ACK. The client will use that IP and doesn't need to + * perform additional DHCP round trips. + * + */ } if (reqmsg == DHCPV4_MSG_DECLINE || reqmsg == DHCPV4_MSG_RELEASE) |