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-rw-r--r--sys/src/cmd/ip/dhcpd/dhcpd.c18
1 files changed, 16 insertions, 2 deletions
diff --git a/sys/src/cmd/ip/dhcpd/dhcpd.c b/sys/src/cmd/ip/dhcpd/dhcpd.c
index 7ca52a049..f6323f535 100644
--- a/sys/src/cmd/ip/dhcpd/dhcpd.c
+++ b/sys/src/cmd/ip/dhcpd/dhcpd.c
@@ -1136,8 +1136,7 @@ miscoptions(Req *rp, uchar *ip)
uchar *addrs[8];
uchar *op, *omax;
uchar x[nelem(addrs)*IPaddrlen], vopts[Maxoptlen];
- char *p;
- char *attr[100], **a;
+ char ip4str[16], *p, *attr[100], **a;
Ndbtuple *t;
Iplifc *lifc;
@@ -1279,6 +1278,21 @@ miscoptions(Req *rp, uchar *ip)
case OBttl:
byteopt(rp, OBttl, 255);
break;
+
+ case ODtftpserver:
+ /*
+ * This option actually should contain a hostname, BUT:
+ * It appears that Rpi4 PXE firmware ignores the siaddr
+ * and instead insists on this (DHCP option 66) to contain
+ * the IP address string of the TFTP server.
+ */
+ snprint(ip4str, sizeof(ip4str), "%V", rp->bp->siaddr);
+ stringopt(rp, ODtftpserver, ip4str);
+ break;
+ case ODbootfile:
+ if(*rp->bp->file)
+ stringopt(rp, ODbootfile, rp->bp->file);
+ break;
}
if (*rp->vendorclass != '\0') {