On Tue, 29 Aug 2023 14:14:06 +0500 Stas Sergeev <stsp2(a)yandex.ru> wrote:BOOTP clients do not use tagged messages for requests. As such, any message without the DHCP option 53, should be considered a BOOTP request. Signed-off-by: Stas Sergeev <stsp2(a)yandex.ru> --- dhcp.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/dhcp.c b/dhcp.c index d04648c..c1ac95e 100644 --- a/dhcp.c +++ b/dhcp.c @@ -323,8 +323,8 @@ int dhcp(const struct ctx *c, const struct pool *p) if (opts[53].c[0] == DHCPDISCOVER) { info("DHCP: offer to discover"); opts[53].s[0] = DHCPOFFER; - } else if (opts[53].c[0] == DHCPREQUEST) { - info("DHCP: ack to request"); + } else if (opts[53].c[0] == DHCPREQUEST || !opts[53].clen) { + info("%s: ack to request", opts[53].clen ? "DHCP" : "BOOTP"); opts[53].s[0] = DHCPACK; } else { return -1;Also applied. -- Stefano