diff options
| author | Mark Johnston <markj@FreeBSD.org> | 2019-05-21 21:22:43 +0000 |
|---|---|---|
| committer | Mark Johnston <markj@FreeBSD.org> | 2019-05-21 21:22:43 +0000 |
| commit | 35131b461677fa6c1d7bb8d47a11058e32c4be82 (patch) | |
| tree | 982f2a2c8ede1c29064943bb44b53db3701a11b9 /libexec/bootpd/bootpgw | |
| parent | 594d1c7235ecf666193b17396844f2ec235ba566 (diff) | |
Notes
Diffstat (limited to 'libexec/bootpd/bootpgw')
| -rw-r--r-- | libexec/bootpd/bootpgw/bootpgw.c | 35 |
1 files changed, 22 insertions, 13 deletions
diff --git a/libexec/bootpd/bootpgw/bootpgw.c b/libexec/bootpd/bootpgw/bootpgw.c index 16bb66b2d292..cdc8e8adc317 100644 --- a/libexec/bootpd/bootpgw/bootpgw.c +++ b/libexec/bootpd/bootpgw/bootpgw.c @@ -124,6 +124,7 @@ struct timeval actualtimeout = u_char maxhops = 4; /* Number of hops allowed for requests. */ u_int minwait = 3; /* Number of seconds client must wait before its bootrequest packets are forwarded. */ +int arpmod = TRUE; /* modify the ARP table */ /* * General @@ -238,6 +239,9 @@ main(argc, argv) break; switch (argv[0][1]) { + case 'a': /* don't modify the ARP table */ + arpmod = FALSE; + break; case 'd': /* debug level */ if (argv[0][2]) { stmp = &(argv[0][2]); @@ -496,7 +500,8 @@ static void usage() { fprintf(stderr, - "usage: bootpgw [-d level] [-i] [-s] [-t timeout] server\n"); + "usage: \nbootpgw [-a] [-d level] [-h count] [-i] [-s] [-t timeout] [-w time] server\n"); + fprintf(stderr, "\t -a\tdon't modify ARP table\n"); fprintf(stderr, "\t -d n\tset debug level\n"); fprintf(stderr, "\t -h n\tset max hop count\n"); fprintf(stderr, "\t -i\tforce inetd mode (run as child of inetd)\n"); @@ -641,19 +646,23 @@ handle_reply() send_addr.sin_addr = bp->bp_yiaddr; send_addr.sin_port = htons(bootpc_port); - /* Create an ARP cache entry for the client. */ - ha = bp->bp_chaddr; - len = bp->bp_hlen; - if (len > MAXHADDRLEN) - len = MAXHADDRLEN; - haf = (int) bp->bp_htype; - if (haf == 0) - haf = HTYPE_ETHERNET; + if (arpmod) { + /* Create an ARP cache entry for the client. */ + ha = bp->bp_chaddr; + len = bp->bp_hlen; + struct in_addr dst; + + if (len > MAXHADDRLEN) + len = MAXHADDRLEN; + haf = (int) bp->bp_htype; + if (haf == 0) + haf = HTYPE_ETHERNET; - if (debug > 1) - report(LOG_INFO, "setarp %s - %s", - inet_ntoa(bp->bp_yiaddr), haddrtoa(ha, len)); - setarp(s, &bp->bp_yiaddr, haf, ha, len); + if (debug > 1) + report(LOG_INFO, "setarp %s - %s", + inet_ntoa(dst), haddrtoa(ha, len)); + setarp(s, &dst, haf, ha, len); + } /* Send reply with same size packet as request used. */ if (sendto(s, pktbuf, pktlen, 0, |