openssl: strange error.... (at first glance) error:2008F002:BIO

Some days ago i wanted to do a check of a certificate of an ip address. No big deal - so i did:

schroff@zerberus:~$ openssl s_client -showcerts  -connect 82.165.229.87.87:443 

140011908769088:error:2008F002:BIO routines:BIO_lookup_ex:system 
lib:../crypto/bio/b_addr.c:726:Name or service not known
connect:errno=22

So i opened google to find a solution.

But on google i found nothing really helpful.

?

The answer was very easy:

If i read the command line carfully, i would have detected my error:

THE IP ADDRESS WAS INVALID

I wrote an ipv4 with 5 numbers and not with 4...

After using a correct ipv4 number the command worked like expected:

schroff@zerberus:~$ openssl s_client -showcerts  -connect 82.165.229.87:443 #
CONNECTED(00000003)
Can't use SSL_get_servername
depth=2 C = US, O = DigiCert Inc, OU = www.digicert.com, CN = DigiCert Global Root CA
verify return:1
depth=1 C = US, O = DigiCert Inc, OU = www.digicert.com, CN = GeoTrust RSA CA 2018
verify return:1
depth=0 C = DE, ST = Rheinland-Pfalz, L = Montabaur, O = 1&1 Mail & Media GmbH, CN = gmx.net
verify return:1
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