Dónde esta ip_forwarding en Solaris 10

Introducción
En versiones anteriores de Solaris <8 y 9> para poder activar el soporte de router, debíamos -a parte de tener al menos dos interfaces de red- poner a <1> el valor de la propiedad <ip_forwarding> del módulo del kernel </dev/tcp> para ello, simplemente debíamos hacer

# ndd -set /dev/tcp ip_forwarding 1

El valor <1> es para activar, y <0> para desactivarlo.

A partir de Solaris 10, esto ya no tiene efecto y debemos utilizar el comando <routeadm> para comprobar y activar el reenvío de paquetes -y protocolos de enrutado-

# routeadm
              Configuration   Current              Current
                     Option   Configuration        System State
---------------------------------------------------------------
               IPv4 routing   disabled             disabled
               IPv6 routing   disabled             disabled
            IPv4 forwarding   disabled              disabled
            IPv6 forwarding   disabled             disabled

           Routing services   "route:default ripng:default"

Routing daemons:

                      STATE   FMRI
                   disabled   svc:/network/routing/route:default
                   disabled   svc:/network/routing/rdisc:default
                   disabled   svc:/network/routing/zebra:quagga
                   disabled   svc:/network/routing/rip:quagga
                   disabled   svc:/network/routing/ripng:default
                   disabled   svc:/network/routing/ripng:quagga
                   disabled   svc:/network/routing/ospf:quagga
                   disabled   svc:/network/routing/ospf6:quagga
                   disabled   svc:/network/routing/bgp:quagga
                   disabled   svc:/network/routing/legacy-routing:ipv4
                   disabled   svc:/network/routing/legacy-routing:ipv6
                   disabled   svc:/network/routing/ndp:default

Para activarlo podemos utilizar las opciones de <-e {propiedad}> o, el FMRI de SMF <svc:/network/ipv4-forwarding:default>, por ejemplo:

# routeadm -e ipv4-forwarding

O utilizando <svcadm>

# svcadm enable ipv4-forwarding

Y podemos comprobar que está activado, utilizando <routeadm> o <svcs>

# routeadm
              Configuration   Current              Current
                     Option   Configuration        System State
---------------------------------------------------------------
               IPv4 routing   disabled             disabled
               IPv6 routing   disabled             disabled
            IPv4 forwarding   enabled              enabled
            IPv6 forwarding   disabled             disabled

           Routing services   "route:default ripng:default"

Routing daemons:

                      STATE   FMRI
                   disabled   svc:/network/routing/route:default
                   disabled   svc:/network/routing/rdisc:default
                   disabled   svc:/network/routing/zebra:quagga
                   disabled   svc:/network/routing/rip:quagga
                   disabled   svc:/network/routing/ripng:default
                   disabled   svc:/network/routing/ripng:quagga
                   disabled   svc:/network/routing/ospf:quagga
                   disabled   svc:/network/routing/ospf6:quagga
                   disabled   svc:/network/routing/bgp:quagga
                   disabled   svc:/network/routing/legacy-routing:ipv4
                   disabled   svc:/network/routing/legacy-routing:ipv6
                   disabled   svc:/network/routing/ndp:default
# svcs ipv4-forwarding
STATE          STIME    FMRI
online         22:12:10 svc:/network/ipv4-forwarding:default

Referencias

• Instalar Squid 2.x en Solaris 10 - Parte 1 :: Proxy Cache
• Instalar Squid 2.x en Solaris 10 - Parte 2 :: Proxy Interceptado (Transparente)
• Comando básicos de Solaris, y no tan básicos de Solaris