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PPP, PPPoS, SERVER: fix DNS servers support

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DNS servers should be set in IPCP allowoptions instead of wantoptions.
In addition if server mode is enabled we need to disable usepeerdns
config flag so we are not asking DNS servers to our client.
This commit is contained in:
Sylvain Rochet 2016-06-26 19:16:51 +02:00
parent 38c0255fa2
commit 4a5422cd11
1 changed files with 9 additions and 2 deletions
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11
src/netif/ppp/pppos.c
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@ -337,6 +337,9 @@ pppos_listen(ppp_pcb *ppp, void *ctx, const struct ppp_addrs *addrs)
pppos_pcb *pppos = (pppos_pcb *)ctx;
#if PPP_IPV4_SUPPORT
ipcp_options *ipcp_wo;
#if LWIP_DNS
ipcp_options *ipcp_ao;
#endif /* LWIP_DNS */
#endif /* PPP_IPV4_SUPPORT */
lcp_options *lcp_wo;
PPPOS_DECL_PROTECT(lev);
@ -365,8 +368,12 @@ pppos_listen(ppp_pcb *ppp, void *ctx, const struct ppp_addrs *addrs)
ipcp_wo->ouraddr = ip4_addr_get_u32(&addrs->our_ipaddr);
ipcp_wo->hisaddr = ip4_addr_get_u32(&addrs->his_ipaddr);
#if LWIP_DNS
ipcp_wo->dnsaddr[0] = ip4_addr_get_u32(&addrs->dns1);
ipcp_wo->dnsaddr[1] = ip4_addr_get_u32(&addrs->dns2);
/* Don't accept DNS from peer */
ppp->settings.usepeerdns = 0;
ipcp_ao = &ppp->ipcp_allowoptions;
ipcp_ao->dnsaddr[0] = ip4_addr_get_u32(&addrs->dns1);
ipcp_ao->dnsaddr[1] = ip4_addr_get_u32(&addrs->dns2);
#endif /* LWIP_DNS */
#else /* PPP_IPV4_SUPPORT */
LWIP_UNUSED_ARG(addrs);