# works
[Feb 13 17:33:37] DEBUG[-1]: res_pjsip/pjsip_resolver.c:477 sip_resolve: Performing SIP DNS resolution of target 'tel.t-online.de'
[Feb 13 17:33:37] DEBUG[-1]: res_pjsip/pjsip_resolver.c:504 sip_resolve: Transport type for target 'tel.t-online.de' is 'TLS'
[Feb 13 17:33:37] DEBUG[-1]: res_pjsip/pjsip_resolver.c:547 sip_resolve: [0x5866daa7818] Created resolution tracking for target 'tel.t-online.de'
[Feb 13 17:33:37] DEBUG[-1]: res_pjsip/pjsip_resolver.c:177 sip_resolve_add: [0x5866daa7818] Added target 'tel.t-online.de' with record type '35', transport 'TLS', and port '5061'
[Feb 13 17:33:37] DEBUG[-1]: res_pjsip/pjsip_resolver.c:177 sip_resolve_add: [0x5866daa7818] Added target '_sips._tcp.tel.t-online.de' with record type '33', transport 'TLS', and port '5061'
[Feb 13 17:33:37] DEBUG[-1]: res_pjsip/pjsip_resolver.c:177 sip_resolve_add: [0x5866daa7818] Added target 'tel.t-online.de' with record type '1', transport 'TLS', and port '5061'
[Feb 13 17:33:37] DEBUG[-1]: res_pjsip/pjsip_resolver.c:616 sip_resolve: [0x5866daa7818] Starting initial resolution using parallel queries for target 'tel.t-online.de'
.......first 7 lines identical
[Feb 13 17:33:37] DEBUG[-1]: res_pjsip/pjsip_resolver.c:277 sip_resolve_callback: [0x5866daa7818] All parallel queries completed
[Feb 13 17:33:37] DEBUG[-1]: res_pjsip/pjsip_resolver.c:371 sip_resolve_callback: [0x5866daa7818] NAPTR record received on target 'tel.t-online.de'
[Feb 13 17:33:37] DEBUG[-1]: res_pjsip/pjsip_resolver.c:177 sip_resolve_add: [0x5866daa7818] Added target '_sips._tcp.tel.t-online.de' with record type '33', transport 'TLS', and port '5061'
[Feb 13 17:33:37] DEBUG[-1]: res_pjsip/pjsip_resolver.c:371 sip_resolve_callback: [0x5866daa7818] NAPTR record received on target 'tel.t-online.de'
[Feb 13 17:33:37] DEBUG[-1]: res_pjsip/pjsip_resolver.c:375 sip_resolve_callback: [0x5866daa7818] NAPTR record skipped because order '20' does not match strict order '10'
[Feb 13 17:33:37] DEBUG[-1]: res_pjsip/pjsip_resolver.c:371 sip_resolve_callback: [0x5866daa7818] NAPTR record received on target 'tel.t-online.de'
[Feb 13 17:33:37] DEBUG[-1]: res_pjsip/pjsip_resolver.c:375 sip_resolve_callback: [0x5866daa7818] NAPTR record skipped because order '30' does not match strict order '10'
[Feb 13 17:33:37] DEBUG[-1]: res_pjsip/pjsip_resolver.c:344 sip_resolve_callback: [0x5866daa7818] SRV record being skipped on target '_sips._tcp.tel.t-online.de' because NAPTR record exists
[Feb 13 17:33:37] DEBUG[-1]: res_pjsip/pjsip_resolver.c:344 sip_resolve_callback: [0x5866daa7818] SRV record being skipped on target '_sips._tcp.tel.t-online.de' because NAPTR record exists
[Feb 13 17:33:37] DEBUG[-1]: res_pjsip/pjsip_resolver.c:344 sip_resolve_callback: [0x5866daa7818] SRV record being skipped on target '_sips._tcp.tel.t-online.de' because NAPTR record exists
[Feb 13 17:33:37] DEBUG[-1]: res_pjsip/pjsip_resolver.c:313 sip_resolve_callback: [0x5866daa7818] A record being skipped on target 'tel.t-online.de' because NAPTR or SRV record exists
[Feb 13 17:33:37] DEBUG[-1]: res_pjsip/pjsip_resolver.c:413 sip_resolve_callback: [0x5866daa7818] New queries added, performing parallel resolution again
[Feb 13 17:33:37] DEBUG[-1]: res_pjsip/pjsip_resolver.c:277 sip_resolve_callback: [0x5866daa7818] All parallel queries completed
[Feb 13 17:33:37] DEBUG[-1]: res_pjsip/pjsip_resolver.c:349 sip_resolve_callback: [0x5866daa7818] SRV record received on target '_sips._tcp.tel.t-online.de'
[Feb 13 17:33:37] DEBUG[-1]: res_pjsip/pjsip_resolver.c:177 sip_resolve_add: [0x5866daa7818] Added target 's-eps-608.edns.t-ipnet.de' with record type '1', transport 'TLS', and port '5061'
[Feb 13 17:33:37] DEBUG[-1]: res_pjsip/pjsip_resolver.c:349 sip_resolve_callback: [0x5866daa7818] SRV record received on target '_sips._tcp.tel.t-online.de'
[Feb 13 17:33:37] DEBUG[-1]: res_pjsip/pjsip_resolver.c:177 sip_resolve_add: [0x5866daa7818] Added target 'h2-eps-608.edns.t-ipnet.de' with record type '1', transport 'TLS', and port '5061'
[Feb 13 17:33:37] DEBUG[-1]: res_pjsip/pjsip_resolver.c:349 sip_resolve_callback: [0x5866daa7818] SRV record received on target '_sips._tcp.tel.t-online.de'
[Feb 13 17:33:37] DEBUG[-1]: res_pjsip/pjsip_resolver.c:177 sip_resolve_add: [0x5866daa7818] Added target 'd-eps-608.edns.t-ipnet.de' with record type '1', transport 'TLS', and port '5061'
[Feb 13 17:33:37] DEBUG[-1]: res_pjsip/pjsip_resolver.c:413 sip_resolve_callback: [0x5866daa7818] New queries added, performing parallel resolution again
[Feb 13 17:33:37] DEBUG[-1]: res_pjsip/pjsip_resolver.c:277 sip_resolve_callback: [0x5866daa7818] All parallel queries completed
[Feb 13 17:33:37] DEBUG[-1]: res_pjsip/pjsip_resolver.c:326 sip_resolve_callback: [0x5866daa7818] A record received on target 's-eps-608.edns.t-ipnet.de'
[Feb 13 17:33:37] DEBUG[-1]: res_pjsip/pjsip_resolver.c:326 sip_resolve_callback: [0x5866daa7818] A record received on target 'h2-eps-608.edns.t-ipnet.de'
[Feb 13 17:33:37] DEBUG[-1]: res_pjsip/pjsip_resolver.c:326 sip_resolve_callback: [0x5866daa7818] A record received on target 'd-eps-608.edns.t-ipnet.de'
[Feb 13 17:33:37] DEBUG[-1]: res_pjsip/pjsip_resolver.c:419 sip_resolve_callback: [0x5866daa7818] Resolution completed - 3 viable targets


# doesn't work
[Feb 13 17:40:29] DEBUG[-1]: res_pjsip/pjsip_resolver.c:477 sip_resolve: Performing SIP DNS resolution of target 'tel.t-online.de'
[Feb 13 17:40:29] DEBUG[-1]: res_pjsip/pjsip_resolver.c:504 sip_resolve: Transport type for target 'tel.t-online.de' is 'TLS'
[Feb 13 17:40:29] DEBUG[-1]: res_pjsip/pjsip_resolver.c:547 sip_resolve: [0xf3eaeed7818] Created resolution tracking for target 'tel.t-online.de'
[Feb 13 17:40:29] DEBUG[-1]: res_pjsip/pjsip_resolver.c:177 sip_resolve_add: [0xf3eaeed7818] Added target 'tel.t-online.de' with record type '35', transport 'TLS', and port '5061'
[Feb 13 17:40:29] DEBUG[-1]: res_pjsip/pjsip_resolver.c:177 sip_resolve_add: [0xf3eaeed7818] Added target '_sips._tcp.tel.t-online.de' with record type '33', transport 'TLS', and port '5061'
[Feb 13 17:40:29] DEBUG[-1]: res_pjsip/pjsip_resolver.c:177 sip_resolve_add: [0xf3eaeed7818] Added target 'tel.t-online.de' with record type '1', transport 'TLS', and port '5061'
[Feb 13 17:40:29] DEBUG[-1]: res_pjsip/pjsip_resolver.c:616 sip_resolve: [0xf3eaeed7818] Starting initial resolution using parallel queries for target 'tel.t-online.de'
.......first 7 lines identical
[Feb 13 17:40:29] ERROR[-1]: res_resolver_unbound.c:306 unbound_resolver_resolve: Failed to perform async DNS resolution of 'tel.t-online.de'
[Feb 13 17:40:29] ERROR[-1]: res_resolver_unbound.c:306 unbound_resolver_resolve: Failed to perform async DNS resolution of '_sips._tcp.tel.t-online.de'
[Feb 13 17:40:29] ERROR[-1]: res_resolver_unbound.c:306 unbound_resolver_resolve: Failed to perform async DNS resolution of 'tel.t-online.de'
[Feb 13 17:40:29] DEBUG[-1]: res_pjsip/pjsip_resolver.c:277 sip_resolve_callback: [0xf3eaeed7818] All parallel queries completed
[Feb 13 17:40:29] DEBUG[-1]: res_pjsip/pjsip_resolver.c:300 sip_resolve_callback: [0xf3eaeed7818] No result information for target 'tel.t-online.de' of type '35'
[Feb 13 17:40:29] DEBUG[-1]: res_pjsip/pjsip_resolver.c:300 sip_resolve_callback: [0xf3eaeed7818] No result information for target '_sips._tcp.tel.t-online.de' of type '33'
[Feb 13 17:40:29] DEBUG[-1]: res_pjsip/pjsip_resolver.c:300 sip_resolve_callback: [0xf3eaeed7818] No result information for target 'tel.t-online.de' of type '1'
[Feb 13 17:40:29] DEBUG[-1]: res_pjsip/pjsip_resolver.c:419 sip_resolve_callback: [0xf3eaeed7818] Resolution completed - 0 viable targets