Hi !
I've trouble to make work snmpget (running on Linux Mint) to initiate DTLS
connection with an agent.
Hostname "tboxvincent" is correctly set in 'hosts' file, and it's working fine
when I ping it.
It seems snmpget has trouble with dtlsudp or dtls transport domain (tried
both), returning message like : "tdomain: Found no domain from specifier
"dtlsudp"" (see below), but I don't know why :
My command :
snmpget -d -DALL -v 3 -l authPriv -n "" -u vincent -a MD5 -A "myPwdPhrase" -x
DES -X "myPrivPhrase" -T localCert=vincent -T trust_cert=TBox_CA -T
their_hostname=tboxvincent dtlsudp:tboxvincent:10161 sysContact.0
Returning on terminal :
trace: netsnmp_tdomain_transport_tspec(): snmp_transport.c, 652:
tdomain: tdomain_transport_spec("snmp", "dtlsudp:tboxvincent:10161", 0,
"udp,udp6", "[NIL]", "[NIL]")
trace: find_tdomain(): snmp_transport.c, 607:
tdomain: Found no domain from specifier "dtlsudp"
trace: netsnmp_tdomain_transport_tspec(): snmp_transport.c, 738:
tdomain: Use user specified default domain "udp,udp6"
trace: find_tdomain(): snmp_transport.c, 601:
tdomain: Found domain "udp" from specifier "udp"
trace: netsnmp_lookup_default_target(): snmp_service.c, 413:
defaults: netsnmp_lookup_default_target("snmp", "udp") -> ":161"
trace: netsnmp_tdomain_transport_tspec(): snmp_transport.c, 791:
tdomain: trying domain "udp" address "dtlsudp:tboxvincent:10161" default
address ":161"
trace: netsnmp_sockaddr_in2(): transports/snmpIPv4BaseDomain.c, 65:
netsnmp_sockaddr_in: addr 0x7ffd345bab90, inpeername
"dtlsudp:tboxvincent:10161", default_target ":161"
trace: netsnmp_sockaddr_in2(): transports/snmpIPv4BaseDomain.c, 65:
netsnmp_sockaddr_in: addr 0x7ffd345bab90, inpeername ":161", default_target
"[NIL]"
trace: netsnmp_sockaddr_in2(): transports/snmpIPv4BaseDomain.c, 122:
netsnmp_sockaddr_in: check user service 161
trace: netsnmp_sockaddr_in2(): transports/snmpIPv4BaseDomain.c, 181:
netsnmp_sockaddr_in: return { AF_INET, 0.0.0.0:161 }
trace: netsnmp_sockaddr_in2(): transports/snmpIPv4BaseDomain.c, 122:
netsnmp_sockaddr_in: check user service tboxvincent:10161
trace: netsnmp_sockaddr_in2(): transports/snmpIPv4BaseDomain.c, 136:
netsnmp_sockaddr_in: servname not numeric
trace: find_tdomain(): snmp_transport.c, 601:
tdomain: Found domain "udp6" from specifier "udp6"
trace: netsnmp_lookup_default_target(): snmp_service.c, 413:
defaults: netsnmp_lookup_default_target("snmp", "udp6") -> ":161"
trace: netsnmp_tdomain_transport_tspec(): snmp_transport.c, 791:
tdomain: trying domain "udp6" address "dtlsudp:tboxvincent:10161" default
address ":161"
trace: netsnmp_sockaddr_in6_2(): transports/snmpIPv6BaseDomain.c, 206:
netsnmp_sockaddr_in6_2: addr 0x7ffd345bab80, peername
"dtlsudp:tboxvincent:10161", default_target ":161"
trace: netsnmp_sockaddr_in6_2(): transports/snmpIPv6BaseDomain.c, 206:
netsnmp_sockaddr_in6_2: addr 0x7ffd345bab80, peername ":161", default_target
"[NIL]"
trace: netsnmp_sockaddr_in6_2(): transports/snmpIPv6BaseDomain.c, 244:
netsnmp_sockaddr_in6_2: totally numeric: 161
trace: netsnmp_sockaddr_in6_2(): transports/snmpIPv6BaseDomain.c, 480:
netsnmp_sockaddr_in6_2: return { AF_INET6, [::]:161 }
trace: netsnmp_sockaddr_in6_2(): transports/snmpIPv6BaseDomain.c, 381:
netsnmp_sockaddr_in6_2: hostname(?) with port suffix :10161
trace: netsnmp_getaddrinfo(): system.c, 866:
dns:getaddrinfo: looking up "dtlsudp:tboxvincent" with hint ({ ... })
trace: _sess_open(): snmp_api.c, 1662:
_sess_open: couldn't interpret peername
snmpget: Unknown host (dtlsudp:tboxvincent:10161) (Invalid argument)
My /etc/snmp.conf file :
mibdirs /usr/share/snmp/mibs
persistentDir /usr/snmp/persist
tempFilePattern /usr/temp/snmpdXXXXXX
defContext none
defVersion 3
defAuthType MD5
defAuthPassphrase myPwdPhrase
defSecurityModel tsm
defSecurityName vincent
defSecurityLevel authPriv
Any help/ideas will be very appreciated, many thanks !
Vincent
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