Is this normal ? What means "traceroute: select: Invalid argument" ?

bash-2.04$ traceroute 195.188.18.210
traceroute to 195.188.18.210 (195.188.18.210), 30 hops max, 40 byte
packets
 1  Cerberus.romtelenet.org (193.226.59.1)  0.920 ms  0.871 ms  0.780 ms

 2  bucharest-cr1-fe3-3.rdsnet.ro (212.93.128.1)  2.305 ms  2.163 ms
2.255 ms
 3  bucharest1-br1-fe5-0-0.rdsnet.ro (193.231.191.33)  3.310 ms  1.811
ms  2.631 ms
 4  401.ATM1-0.gw7.Frankfurt1.de.alter.net (139.4.42.217)  31.682 ms
27.736 ms  28.386 ms
 5  so-7-1-0.xr2.Frankfurt1.de.alter.net (149.227.48.29)  28.098 ms
29.346 ms  27.883 ms
 6  POS8-0-0.gw4.Frankfurt1.de.alter.net (149.227.22.50)  28.399 ms
29.015 ms  28.451 ms
 7  * Level3.Frankfurt.de.alter.net (139.4.44.50)  30.114 ms  28.706 ms
 8  unknown.Level3.net (195.122.136.2)  28.208 ms  28.629 ms  28.891 ms
 9  so-3-0-0.mp2.London1.Level3.net (212.187.128.57)  41.889 ms *
43.790 ms
10  gigabitethernet6-0.core2.London1.Level3.net (212.187.131.46)  41.733
ms  42.183 ms  42.451 ms
11  pos2-0.metro2-londencyh00.London1.Level3.net (212.113.0.117)  42.487
ms  42.721 ms  42.497 ms
12  * * *
13  * * *
14  * * *
15  * * unknown.Level3.net (212.187.151.98)  52.214 ms !H
16  * * *
17  * * *
18  *traceroute: select: Invalid argument
bash-2.04$ uname -a
NetBSD kefren.netbsd.ro 1.5ZA NetBSD 1.5ZA (Kefren) #2: Wed Jan  2
16:02:54 EET 2002
mihai@kefren.netbsd.ro:/usr/src/sys/arch/i386/compile/Kefren i386

Cheers,
Mihai