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* dhcp: don't allocate a new lease when processing Request message

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This commit is contained in:
Simon Zolin
2019-03-07 16:57:20 +03:00
parent d832d7ce95
commit 542a67b84e
2 changed files with 5 additions and 18 deletions
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9
dhcpd/dhcpd.go
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@@ -369,7 +369,6 @@ func (s *Server) handleDiscover(p dhcp4.Packet, options dhcp4.Options) dhcp4.Pac
func (s *Server) handleDHCP4Request(p dhcp4.Packet, options dhcp4.Options) dhcp4.Packet {
var lease *Lease
var err error
reqIP := net.IP(options[dhcp4.OptionRequestedIPAddress])
log.Tracef("Message from client: Request. IP: %s ReqIP: %s HW: %s",
@@ -395,12 +394,8 @@ func (s *Server) handleDHCP4Request(p dhcp4.Packet, options dhcp4.Options) dhcp4
lease = s.findLease(p)
if lease == nil {
lease, err = s.reserveLease(p)
if err != nil {
log.Tracef("Couldn't find free lease: %s", err)
// couldn't find lease, don't respond
return nil
}
log.Tracef("Lease for %s isn't found", p.CHAddr())
return dhcp4.ReplyPacket(p, dhcp4.NAK, s.ipnet.IP, nil, 0, nil)
}
if !lease.IP.Equal(reqIP) {