Norbert van Bolhuis wrote:

The problem is that BOOTP_SIZE uses ETHER_HDR_SIZE which is 14 bytes. If sending a VLAN tagged frame (when env variable vlan is set) this should be VLAN_ETHER_HDR_SIZE=18 which is what NetSetEther returns.

diff --git a/net/bootp.c b/net/bootp.c index 3dea70a..77057c6 100644 --- a/net/bootp.c +++ b/net/bootp.c @@ -687,7 +687,7 @@ BootpRequest (void) * Calculate proper packet lengths taking into account the * variable size of the options field */

• pktlen = BOOTP_SIZE - sizeof(bp->bp_vend) + ext_len;

• pktlen = ((int)(pkt-NetTxPacket)) + BOOTP_HDR_SIZE - sizeof(bp->bp_vend) + ext_len; iplen = BOOTP_HDR_SIZE - sizeof(bp->bp_vend) + ext_len; NetSetIP(iphdr, 0xFFFFFFFFL, PORT_BOOTPS, PORT_BOOTPC, iplen); NetSetTimeout(SELECT_TIMEOUT, BootpTimeout);

@@ -860,7 +860,7 @@ static void DhcpSendRequestPkt(Bootp_t *bp_offer) NetCopyIP(&OfferedIP, &bp_offer->bp_yiaddr); extlen = DhcpExtended((u8 *)bp->bp_vend, DHCP_REQUEST, NetDHCPServerIP, OfferedIP);

• pktlen = BOOTP_SIZE - sizeof(bp->bp_vend) + extlen;

• pktlen = ((int)(pkt-NetTxPacket)) + BOOTP_HDR_SIZE - sizeof(bp->bp_vend) + extlen; iplen = BOOTP_HDR_SIZE - sizeof(bp->bp_vend) + extlen; NetSetIP(iphdr, 0xFFFFFFFFL, PORT_BOOTPS, PORT_BOOTPC, iplen);

Applied to net repo.

thanks, Ben