URL: https://linuxfr.org/forums/linux-general/posts/dig-option-trace
Title: dig option +trace
Authors: Philippe M
Date: 2015年09月01日T09:35:19+02:00
License: CC By-SA
Tags: 
Score: 0
Bonjour,
Je debug mon serveur local dns parce que je trouve qu'il est long à répondre et je soupçonne que certains programmes aiment pas les temps de réponse trop long.
Lorsque je fais
```sh
 dig server.mon.dom +trace
 ; <<strong>> DiG 9.10.2-P3-RedHat-9.10.2-4.P3.fc22 <<strong>> server.mon.dom +trace
 ;; global options: +cmd
 .			518400	IN	NS	M.ROOT-SERVERS.NET.
 .			518400	IN	NS	A.ROOT-SERVERS.NET.
 .			518400	IN	NS	B.ROOT-SERVERS.NET.
 .			518400	IN	NS	C.ROOT-SERVERS.NET.
 .			518400	IN	NS	D.ROOT-SERVERS.NET.
 .			518400	IN	NS	E.ROOT-SERVERS.NET.
 .			518400	IN	NS	F.ROOT-SERVERS.NET.
 .			518400	IN	NS	G.ROOT-SERVERS.NET.
 .			518400	IN	NS	H.ROOT-SERVERS.NET.
 .			518400	IN	NS	I.ROOT-SERVERS.NET.
 .			518400	IN	NS	J.ROOT-SERVERS.NET.
 .			518400	IN	NS	K.ROOT-SERVERS.NET.
 .			518400	IN	NS	L.ROOT-SERVERS.NET.
 ;; Received 811 bytes from 192.168.xxx.xxx#53(192.168.xxx.xxx) in 0 ms
 
 hermes.			86400	IN	NSEC	hiphop. NS DS RRSIG NSEC
 hermes.			86400	IN	RRSIG	NSEC 8 1 86400 20150910170000 20150831160000 1518 . f6l2sOxUCof8wSHxmeX2h68cYdTWAIB3hp2GTX1d2qmUhK9FZ6LyC0mf 1uSsYxT85iZ/UYSd8wGNL3ENxzxVze/ejtQXcgNvlEeatqarwbpyG4m+ ltKK7MOG0gXa0Z1Ahc/bEFmaOIszFZftG4h9i4dtCrNEKFtw3bePx9u6 tdU=
 .			86400	IN	NSEC	aaa. NS SOA RRSIG NSEC DNSKEY
 .			86400	IN	RRSIG	NSEC 8 0 86400 20150910170000 20150831160000 1518 . p0msPrsZzvxWB0fpa3A06nPyTFzYZ4dWbseHVa1Ws0X0bnME3q80KnBB rLxl6H92Xzoo/i1zUEW/aLgMCSlSQThCAhuGBl0v0KgAui0kwH4dAYe8 IZkW3TW9rP4bUDiUQCfbfH1AJ0fJKG8/Ol4TmPSvFMu8iuhBa94IvNB/ 3mY=
 .			86400	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2015083101 1800 900 604800 86400
 .			86400	IN	RRSIG	SOA 8 0 86400 20150910170000 20150831160000 1518 . q0y5HOog7oNLlzyRc7iNIrkicosQl+4KkUKKFqr1vOdmcsVEJllbQtXT lHEt4yFHw4tBLDM1c2IDVB3BFIDi4gGBw10qUy7eJkOkFX+za1wrMMf2 /RbXSV5hVvdZRqUIPaVHvKJgqAzLc9ZjfprzxI/NG8C2Wt1AV0kwh0bj qZg=
 ;; Received 657 bytes from 128.63.2.53#53(H.ROOT-SERVERS.NET) in 103 ms
```
Est-ce que ça veut dire qu'il va chercher d'abord sur les DNS root puis ensuite il va sur mon DNS local (192.168.xxx.xxx) ?
Merci d'avance.
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